1st place Mousetrap Car Ideas

[@danieljensen2626]

When we did this in highschool our speed/acceleration contest was only over a meter, so I just used the mouse trap to catapult my car over the finish line.

[@kyleguajardo]

Modern problems require ancient solutions

[@a_stone]

*yeet*

[@James-tv2bm]

How’d that work for you

[@danieljensen2626]

@@James-tv2bm Great, I won easily. It was so fast you couldn't really hand time it properly. Of course it rarely landed on its wheels so it wasn't any good over a longer distance.

[@fieldmarshal7298]

That's actually smart

[@MoriAngostura]

Hey! That's me at 12:50 ! Super cool to see a Science Olympiad event highlighted on your channel! It was great to meet you and talk about my car.

[@nyensimpfenderfer4980]

Seriously

[@Yeujer]

SCIOLY IS LIFE

[@RSpudieD]

Sweet! Congratz!

[@db_d.a.b651]

just finished my SCOILY event at 4:00

[@waterlubber]

>TFW States is already over I didn't work on my teams mousetrap. I did 3D print the bearing mounts though. I think it actually got first at states.

[@PotatoJet]

The internet needs more people like Mark Rober. KZbin should give incentives for NASA employees to become creators.

[@sunglassesdude4819]

Potato Jet my science teacher is a scientist with the opportunity rover. Its cool because there is a club thing where we get to work with nasa with it. However that teacher isn’t very nice and I have been yelled at for doing what I was supposed to be doing a couple times. One specific instance of this was with force vectors. She asked the class how to do them without telling us first. I connected it to vectors which we saw in geometry but I was yelled at to stop doing geometry because this is science. She then explained how to do it and it was geometry... I wouldn’t like to see her on KZbin tbh.

[@pasghikhami1342]

NASA employees should stick to being important

[@sunglassesdude4819]

Pasgh ikhami getting to Mars is important but following your passion and having a life is also important

[@goblingamer606]

Has anyone ever tried using this same concept to propell something like a paper airplane? Doesnt necessarily need to be made out of paper because thats flimsy, but i think that would be a fun idea too

[@jamesg265]

Not all NASA employees are like him they are mostly old

[@НиколайШаралапов]

I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.

[@itzsophxo8154]

The way Mark explains physics is not only easier to understand than school ever taught me but he makes it so much more interesting

[@JupiterKnight]

chicken nuggets

[@rockhopper6316]

Yes exactly

[@wren7195]

@@rockhopper6316 What scares me is "go dominate the competition" means you won by like 1.5 mm

[@LawrenceLS]

@@JupiterKnight chicken numgies

[@rockhopper6316]

@@wren7195 yea lol

[@JPbo33]

- Dad, why is my sister called Rose? - Because your mother loves flowers. - Oh ok, thanks dad.. - No problem, Mechanical Advantage.

[@BlitzBodyBeats]

*D E L E T E T H I S C O M M E N T*

[@WarmongerSlays]

@@BlitzBodyBeats Why

[@TheDogBasti]

@@WarmongerSlays some man want to watch the world burn

[@croccroc4000]

No problem. *communism*

[@order66pizzas]

EEE EEE no problem democracy

[@Spock1777]

I wish Mark was my physics teacher...

[@alexbaker9996]

That would be amazing class would never be boring

[@Owmarsh12]

You and everyone else. Move to Denver Mark

[@nataliaray7315]

I know!

[@Wintercourse]

My Physic teachers failed me with a 59.6 in high school. I went after school everyday to work on crap because everything was group based. My friend didn't know anything, and stoner girl didn't show up. The workload was added on as the first group finished, so it was impossible to actually keep up. Two years after I graduate I found out he was sleeping with a sophomore girl and was caught and he fled the country....Yeah I wish this guy had been my Physics teacher.

[@Wintercourse]

@@neb4587 I couldn't get full credit because I didn't have group members to finish their stuff. Yeah he was a creep.

[@robertboyd2223]

Can you imagine how lucky some future kid is gonna be to be able to call Mark Rober their physics teacher??

[@bwbac]

omg now thats something mind blowing

[@rendoesmath]

yes,I wish we could study again

[@chriswilliamson806]

Could you imagine the school board looking at what he would want to do? Lol

[@robertboyd2223]

@@chriswilliamson806 so today we’re gonna catapult an entire cafeteria

[@andyrockism]

Well we can also call him our physics teacher too. Just for us he teaches us here on KZbin as oppose to a classroom.

[@kinju6227]

“Thank yo-“ Niece: ** *Slaps Ice Cream* ** “O WOAAH”

[@Yehe13]

so rude

[@thisisemmalyshandle]

Trenity R salty slap

[@rapiintheskyy3585]

that was cringe

[@Sillimant_]

@@Yehe13 it was scripted, you can see they love him

[@Sillimant_]

@@rapiintheskyy3585 it was part of the joke, much like your continued existence

[@twobladedswordsandmauls2120]

When mr. Rober is a physics teacher to almost 10 million people and doesn't realize it.

[@hazlewo0d9]

On-Plot-Point physics, engineering, math, science, medical information, problem solving, and FUN!!!

[@salteds0cks]

@flowazx 10.3 mil

[@1_adityasingh]

@@salteds0cks 10.4 mil

[@notoctoboy5703]

*don't

[@twobladedswordsandmauls2120]

@@notoctoboy5703 No, no, that wasn't what you were supposed to say there, "doesn't" is perfectly grammatically correct in that circumstance. This is how it is a supposed to work in all but one situation. So, unless you think I was writing dialogue for a character from the American south, or colonial era England and forgot my quotation marks, then I will be praying so very piously for your immortal soul you uncultured boar.

[@lunaabney6312]

you would be a GREAT science or tech ed teacher

[@carsenwhitmore1559]

Or a physics teacher

[@iamanartistbutcantdraw4454]

Gavin D'Souza no search anonymous

[@xxfluffydogxx7026]

Oh I'm a anonymous member too

[@xxfluffydogxx7026]

@@Vertense do you even know anonymous?

[@peggzmugga1811]

Hi

[@luigio8484]

this has sat in my brain for 3 years and has silently been supporting me through my physics classes. Thank you.

[@츏]

Silent support from mark

[@Shrew-22O1]

Mark: “I want to be a physics teacher later on” Every subscribers: ^ *has been learning from him since the beginning* ^ 👀

[@HighTiered]

Naruto X Hinata k

[@ldbeastmode0689]

Me: This is boring, I can’t wait till schools out *Schools out* Me:*watches educational videos for fun*

[@DreidMusicalX]

Learning is never over.

[@OeshenNix]

Hey thats me

[@mamabear9467]

Same bro I watch them all the time

[@ndzd07]

This is me I used to just binge watch every large educational channel, then I stopped and now I'm finally getting back into it

[@ldw0696]

Yea in quarantine I'm out of school but I wish I was in it

[@jonathanhuang6156]

1:36 Mark: But I could lift 10lbs 50 times. *Uses a 12 pound weight*

[@zestymushr00m85]

Also said his car weighed 500 lbs soooooo

[@zestymushr00m85]

YoYO Semite which is my point, the weight was also an example to keep math simple

[@arzonfyre8421]

@@zestymushr00m85 it was only one corner of the car being lifted. Which he estimated at 500 pounds

[@zestymushr00m85]

Guys he was just giving an example🙃🙃 I’m agreeing with Jonathan Huang just using the car weight example

[@GamingWO-]

YoYO Semite what, where’s the acceleration? You have distance.

[@The_JosephDream]

It’s almost 2022 and I’m still enjoying this video, I mean the way Mark explains engineering is so amazing.

[@DUDEFISH_]

yes ikr he also inspired me to make a montage in my video

[@Dragon-Slay3r]

Welcome to Joseph's nightmare

[@limeedhot]

It's almost 2023 and I'm still enjoying this video, I mean the way Mark explains engineering is so amazing.

[@megagatlingpea2322]

its already 2023 for me

[@itzpogboy]

Hello its 2024 buddy wake u0

[@LuxrayLloyd]

I learned more in the first 5 minutes than a whole semester in high school

[@ferretrevelvent6793]

Sad but tru

[@marylawrence2218]

Maybe short term, but learning is (or should be) based on retained understanding and application.

[@asbuilt0017]

Mary Lawrence yeah you are right but you can re watch the video

[@avitus2]

I feel this. I just wish I had a physics teacher in high school that didn't play favorites to their special projects group (in this case, the solar bike team). If you were on the team, you got her complete attention, if you weren't then tough cookies read the book and too bad if you don't understand it from reading the chapter.

[@LuxrayLloyd]

@@avitus2 If you have a teacher that has favorites, that sucks.

[@lavissebruh3144]

Breaking news: Worker in NASA go to school to totally annihilate kids in mousetrap car race

[@MineShineMarshal]

Yuen Kik Li former

[@chaosincarnate7304]

Correction: Former Worker at NASA went to a school to totally annihilate kids -in mousetrap car race-

[@kirtan__]

This was for the mousetrap vehicle event for Science Olympiad. Teams spend forever on designs so that’s why Mark did not show the design the team he was visiting was using. They were actually going to nationals and why would Mark leak a teams design if they’re going to Cornell.

[@cogn0765]

lol

[@ChaoticCrimsonX]

Mark: "A little bit of water spills out every time" Also mark: *Purposely misses cup*

[@prinzeszelda3650]

He is Like realy Bad at pouring

[@prinzeszelda3650]

@The Demon Under Your Bed • 3 years ago thx

[@umbraltears3434]

you should see liam thompson pour liquid

[@manuelpatino5879]

Mark: Talks like a smart person Me: I don't know what you're talking about, but it seems interesting

[@richardlooch2109]

the winning model is the one where the mousetrap lever activates a electric motor...

[@kennethborden929]

I never did this as a kid but being an auto mechanic now I got a huge kick out of this video! Made me think about the mathematics of transmissions and differential final drive ratios. Super fun keep up the great work!

[@Hubbmade]

13:30 this is how happy I imagine Mark is *ALL THE TIME* when he's learning, making, and teaching! Keep up the great work!

[@jimmesc]

Hub Han Great minds think alike. I saw that and thought the very same thing as you did. I wish I had as great a mind as Mark.

[@ItsJayTho]

Press F to pay respects to icecream

[@neb373]

Jayden Games bruh im eating some rn 😂😂

[@Naat.ee12]

Uhhh, im on phone.... 🙄

[@maaz.ur.rehman.2005]

F

[@520gamingandvlogs9]

F

[@ItsJayTho]

@@Naat.ee12 just press reply then SIMPLY press f :)

[@bigandfluffy2000]

i dont watch because its relevant, i watch because its entertaining...

[@fqidz]

True

[@Aciey]

me to

[@yeahyou7827]

Same

[@Tfifiuyiugtjfytyftj]

I agree with you

[@literallybooby2737]

JoeSloppyJoe I watch it for both

[@giusepperesponte8077]

I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.

[@kosmosan12]

This video is a tutorial for almost all kind of rolling. I mean, it explains drag racing cars tweaks, bicycle gears/wheelsize, etc. Love the video, thx

[@theevauwu7853]

Lesson of the day: don't make a bet with mark

[@lucron12]

Yes that is so true

[@lucron12]

You’re really correct

[@lucron12]

Im just doing this so it Will look like People comment

[@lucron12]

: )

[@lucron12]

You welcome Eva Slyva

[@superblooperboss1638]

no one is talking about how mark was outside IN THE RAIN for a bit just so he can explain the topic he was on. I want him to be my teacher.

[@ExperimentalFun]

I wish we did something cool like this when I was in school... good job on the video! :)

[@AzimuthSolutions]

We didn't even have a science fair at my school.

[@connermcgibbon6934]

I was supposed to do mouse trap cars but my school canceled it.

[@victorcho1242]

Experimental Fun I hate u

[@ExperimentalFun]

why do you hate me?

[@Rikardo35]

Experimental Fun yep same

[@FlorenzVillegas]

Somebody: Creates a contest that's a thing just in the USA. USA: Yay, World Record! ;-)

[@Sillimant_]

It's like the miss universe thing, hardly any competition when it's just earth

[@Jaybuyshoe]

Somebody: Creates a contest that's a thing just in the USA. USA: Yay, World Record! ;-)

[@nathanielkidd2840]

Yeah. The rest of the world just doesn’t show up to compete.

[@DarthBil1]

I laughed so hard when your niece knocked the ice-cream out of your hand.

[@duckyfam9012]

DarthBil1 IKR LOL

[@Vic_Inso]

Ows talaga ba?

[@_Grimm333_]

Same

[@gal3win213]

@@Vic_Inso filipino?

[@lamp1739]

Wait when?

[@danielliang2946]

Hey Mark! Nice Video. I wanted to point out that, at 2:03, mechanical advantage doesn't necessarily equal number of pulleys in all pulley systems. This is because fixed pulleys (pulleys which don't move while the load does) have a mechanical advantage of 1, while movable pulleys (pulleys which do move while the load does) have a mechanical advantage of 2. This is why, in your case, the pulley system had a mechanical advantage of 4: the specific arrangement and positioning of 2 movable and 2 fixed pulleys allowed the system to have a mechanical advantage of 4. However, it is important to note that this doesn't happen to all arrangements of 4 pulleys, as if you were to line up 4 fixed pulleys, you would still get an mechanical advantage of 1, not 4. Thus, you cannot say that mechanical advantage equals number of pulleys in all pulley systems. Instead, you could "split" up the tension along the ropes of a pulley through a diagram. Here's the procedure: you first can imagine that you are holding the end of whatever pulley system you are trying to solve with such a force such that the system is in static equilibrium. Next, you can split the tension caused by the force of the load among the ropes of the pulley system. The key to remember is that each unbroken piece of rope will have uniform tension along it. Finally, you keep splitting the tension all the way until you reach the rope which you are holding. The mechanical advantage of the pulley system will simply be the the load force divided by the effort force, which is simply equal to the tension in that rope you are holding, since the system is in static equilibrium. THAT is the correct way to solve for the mechanical advantage of a pulley system (sorry if I explained it badly). Additionally, I wanted to point out that, at 2:08, mechanical advantage of an inclined plane does not equal the ratio of the length to the height unless the inclined plane is just flat and not inclined, in which case I wouldn't really call it an "inclined" plane. But instead, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height. This can be derived like this: the load force on the inclined plane is simply equal to its downward force caused by gravity, which is simple equal to f = ma = mg. We can split this force into its x- and y- components, which we can then deduce that the force of the load in the direction parallel to and going down the hypotenuse of the inclined plane is equal to mgsin(theta), in which theta is the angle of the elevation of the inclined plane. This means that, if we were to push the load up on the inclined plane with force mgsin(theta), then the system would achieve static equilibrium. In other words, the load would stay in place. Since we know that mechanical advantage is defined as the ratio of the output force to the input force, that would simply mean that the mechanical advantage of the inclined plane would be mg/mgsin(theta), as mg is the output force in this case and mgsin(theta) is the input force in this case. This simplifies to 1/sin(theta). This is simply equal to the ratio of the hypotenuse to the side opposite angle theta, which in this case is height. Thus, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height.

[@penflex8997]

I’m to lazy to read gib a summary

[@FluffyDragonDrawing]

you are absolutley correct but remember mark is tying to simplify these things so people with zero knowledge can understad. he would have lost a LOT of people hadd he tried to explain all of that. hence why he ust suggests we do it ourselves

[@penflex8997]

@@FluffyDragonDrawing summary cool waited awhile

[@jasonbaker541]

I love what you do and patiently wait for each video.Thank you for making me and my family smarter and more interested in science.

[@ab-zd3ue]

.

[@gdal6961]

He deserves more. He literally travels soo far for just a video!😸

[@drmg735]

no crap he deserves more

[@sharron74]

Yep.

[@ansonpoon4814]

Hmmmm, you heard of Nick Robinson?

[@whitemingo8152]

Yes

[@kiranayuri570]

He also takes like months sometimes

[@megamaz108]

Can you believe I had to watch my favorite youtuber for homework on my Mouse trap car?? :O

[@SuperMaDBrothers]

megamaz dang bro really

[@CJDavis-js7mr]

Me too lol

[@ttv__btw__yt4835]

K

[@_reddical_5813]

in my 8th grade science class we are actually doing something where you can either build a lander or a rover, no electricity and stuff like that. I had the egg drop thing as an idea for a lander and this for a rover and I'm super excited to test both out and see which one is better.

[@resentfulsidecharacter3713]

So what happened

[@fabianklevenz4800]

i was expecting a mouse trap that catches a mouse and drives away with it

[@gloriaroma-sandiegorealest4037]

Whisper voice: lol, me too!

[@greatacarrillo]

Same

[@SSruh]

Hit & Run

[@gamingwithluke5592]

Same

[@shmup6955]

Ha

[@wink9114]

al is my current physics teacher, ama.

[@angiebeattie4113]

What is your favorite demo so far

[@wink9114]

thanks for the heart mark, now i'm finally famous. angie - probably the one where he blew up the ceiling with a bottle. that one was pretty neat. cos he blew stuff up. with a bottle. will - because i have the mind of a third grader

[@zAznInVaznz]

best teacher ever or what???

[@perluc_]

Did you ever get the „Hammertreatment“?

[@MrDabien]

do you like bread?

[@nwiiho]

Mark: Talks like a smart person Me: I don't know what you're talking about, but it seems interesting

[@azaanammar3841]

True

[@pizzx824]

shungite

[@nwiiho]

@@pizzx824 J O I N U S

[@pizzx824]

@@nwiiho SHUNGITE

[@casvandelaar8671]

Same man I feel you

[@LuckyBoi-vg3ch]

The way he explained physics is so much better then the 9 years of science class I've taken

[@thespacething-rad]

nerd!

[@Kevin-rc5ec]

The street fighter transition at 4:27 is amazing. Thank you for putting in that extra effort into your videos!

[@parklloyd6690]

Holy cow! Thank you for another amazing video. I have two sons studying engineering at Utah State and we all love your videos. We're going to have to have a family mousetrap car competition. and then AFTER that, I'll show them the video. Keep up the great work.

[@amauryd]

When you learn more in a 15min video then in 13 years school

[@fezankhan536]

true

[@ballistic3666]

Exactly

[@akefayamenay104]

*than. Now you’ve got some grammar too 😜

[@jococallos9361]

fck yeah

[@myaopsahl999]

Happy birthday to you and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play

[@bonook8]

I first did this project in 1987 during my student teaching in Industrial arts. We used two mouse traps which allowed options on how to best utilize them. I continued this project for the next 12 years as an engineering project in Drafting class. Best run was 437 feet in a 12 foot wide hallway so straight tracking was important. The best wheels were 33rpm vinyl record albums. I didn't invent this project and don't know it's origins.

[@rxq8289]

Nobody: Mark: Dang it I wanted to be a physics teacher but I ended up working at nasa

[@blahnomnomnom]

Lolol definitely

[@finn596]

Aw I wanted to be a millionare not a billionare

[@Tyrantstorm]

@DrewZull Káędîij NASA* but yeah

[@GrandpaPapi]

YourDudeBk because it is really annoying to many people when someone corrects a small issue, ‘cause it makes them feel like they can’t make mistakes or else they get a red flag. i know many people who hate that.

[@zane1623]

@@GrandpaPapi werent you the one that corrected first? and who called someone a nerd?

[@Frank_142]

If he was my physics teacher I would skip other classes to go to his class

[@turtles8930]

Future Fire ikr

[@nicoliftsz]

Same

[@igorchurilov5611]

Future Fire he’s my teacher😂

[@chillnub641]

Same

[@SupremeLordGeek]

Same

[@liamlabelle8653]

I remember building one of these in my 8th-grade science class. Once I finished the project, and presented it at school, my father attached Estes Model Rocket Engines to the car.

[@J0.n.]

Please tell what supplies you got for the car need help for my science project

[@kyvehvolvadan5260]

If this is an optimization problem, could you use calculus to find the ideal ratios to reach a certain distance?

[@connis2299]

It would be difficult since you don't know the exact parameters at play There are several methods to optimize based on limited data and they mostly come down to "smart efficient ways to interpolate between samples then optimizing this interpolated model"

[@hayleygrimes8804]

Mark: Talking about Mechanical advantages Weather: RAIN! Mark: Keeps talking!

[@lazer1036]

Yes

[@thecringygamer_4656]

Jokes on you, I'm part of the 3.3% of people who have a school project on this

[@lyhi2951]

Oh lord tachanka, we are not worthy for your existence

[@blade_w1nn1ng21]

Lucky

[@adiljaved1330]

TheCringyGamer _ 0.3%* he said 99.7%

[@zanefuehrer962]

Same

[@shrimp9760]

He said 99.7% of people don't do this in their lifetime, so 0.3% of people do this in their lifetime.

[@silverturtle0213]

All I said was "new Mark Rober video" and the 5 yr old and 9 yr old came a-runnin' :) We love science in this house.

[@reicintron]

UgniusKas ja 💀

[@silverturtle0213]

UgniusKas yes, I was a physics major for 2 years so i can clarify but I'm not great at getting them excited. They somewhat get it but Mark is very entertaining too.

[@davantebaptiste5038]

Nice wip

[@davantebaptiste5038]

Mr. mouse is getting all the honeys in his car

[@davantebaptiste5038]

Do your thing Mr. mouse

[@ttimothylive]

I used this video back in seventh grade over the course of 4 weeks to build a fully optimized (realistically) car. Sadly the pandemic hit and I never got to see how far it went.

[@RickSmithJr]

I look forward to working with you! We’re going to have so much fun!

[@EnzoM]

Rick Smith, Jr. spoiler alert?

[@markus9621]

I

[@danpriest962]

??

[@bumpusjones.1978]

The ice cream cone slap was the funniest thing I’ve seen in awhile.

[@grimace5800]

My friend built a mousetrap car and it exploded when he tested it in competition

[@verendus7712]

A.D.E 35 oh my hahahahaha

[@wilag8er85]

Wtf did he make it with?

[@sashimi0003]

wilag8er I think he meant like the spring broke and destroyed the car

[@mr.peanutharry7723]

Your picture makes this comment better

[@ratrat5072]

A.D.E 35 wow

[@Chandrius4263]

Bro's filming in rain.. And I didn't notice the first time.. That is dedication! Keep the lessons going! I love your videos!!

[@sev1011]

I remember building mine out of legos. It impressed my Physics Teacher so much that he asked if he could take pictures of it to use for future examples. I hated him as a person, but I respect him as a teacher.

[@playitcoolman7820]

Wow.

[@edmund8954]

Impressive.

[@KmChx_MX]

Well that took an unexpected turn at the end, dang 😂😂

[@tetardfoo8863]

"I can lift 10 pounds 50 times" *has a 12 pound weight*

[@giornogiovanna4758]

same thing different number

[@cartervaught3629]

Lol

[@DocFanti]

Huh

[@wrog7616]

I saw that too! lol

[@bronysavior7740]

Looks like it says 14 not 12

[@dais6155]

Can we just take a moment to appreciate the fact that Mark stood outside while it was sprinkling/raining all for a video for us...👏🏼👏🏼👏🏼❤️

[@kjteitel]

Great video, small thing, had this same mouse trap challenge in my junior year in high school physics class in 1989. It was a great learning experience! Don't remember who won, we had an incredible teacher, just like Mr. Karud. Big props to him for his dedication to his students!

[@bonook8]

You are correct. I taught Industrial arts and did this beginning in 1987. I did not come up with the idea and don't know it's origins but I do know it did not begin in 1991.

[@d1rtworm]

I'm never going to let Mark pour me a glass of tea.

[@goldenmichael9981]

A robot to support robot to give you the part that will attach to a robot that will pour you a tea

[@rasmus9311]

I love these videos were you dwelve into something seen as relatively simple but you dive into every detail and explain it which makes it very interesting and educational

[@scrumptiousbisquitz1140]

I WOULD SAY THAT I WISH YOU WERE MY PHYSICS TEACHER BUT MY PHYSICS TEACHER WAS ALSO SICK

[@gthetree1]

AFaysE _7 that’s too bad, I hope he/she gets better soon! 🤓

[@scrumptiousbisquitz1140]

Grant Hester gg man well played

[@xiangxp]

AFaysE _7 LOL

[@dashiefiles]

You know everyday would be this kind of stuff

[@iankrasnow5383]

He IS your physics teacher. He's teaching you physics. *mind blown*

[@notsiddhi2820]

1:43 my guy literally standing in the rain for science.... +1 respect

[@poes1965]

Me in class trying to understand something simple in class: wait what where WHY? ME on KZbin understanding something really complicated: oh ok I see

[@DamageMaximo]

All Mark's videos be like

[@thomasalsum2012]

It’s because mark won’t be quizzing us lol

[@jackosland8256]

Ok explain it to me

[@oogabooga9573]

No the videos dumbed down ofc and he has irl examples of the things he talks about and while u may learn something from this its only really a snippet from the broad topic

[@cevcena6692]

So you can now compute for mechanical advantage just by watching this video? Or do you just feel like you learned something....

[@sebastianoussoren8135]

1:25 Dang, dat gurl is savage.. Edit: OMG Thank you soooo much for all the likes

[@benandrews7403]

SHE'S ONLY 15 YOU DISGUSTING MAN

[@bfart5770]

Sergeant Hale u do know what savage is right

[@benandrews7403]

Don't like your own comment. ALSO I KNOW WHAT I AM TALKING ABOUT. DON'T TRY TURNING THE TABLES YOUNG MAN.

[@mohamedharith6287]

the Term savage is used as kind of like a meme type thing nowadays but it just means that someone doing an act which isn’t very brutal but if seen in a different angle can still be considered as brutal,thus the term savage

[@lezhaosicne6387]

@@benandrews7403 how is that disgusting?

[@SloppyJoe-ke7gq]

“ I made him show me all his cool demos” 4:50 “And that’s how I died”

[@joshuatube6918]

IDK how he didn't die

[@fahadthenoob4978]

You'll learn in high school lmao

[@asiyaehsan1682]

JoshuaTube the pressure was super spread out

[@Owen_loves_Butters]

@@joshuatube6918Pressure = Force / Area Since there was a whole bed of nails, the area was increased, so the pressure was decreased, meaning the nails couldn't puncture the skin.

[@Ha1ivan]

I think he would is a really cool, chill, inspirational, and wholesome teacher in my opinion. 10/10

[@mattfromwiisports2293]

Can we get a R.I.P in the chat for Mark's ice cream

[@lnx-retr0438]

RIP

[@playstation6977]

RIP

[@Ripsawman0]

Rest in peace

[@calebyao.]

RIP

[@hossclark2889]

Rip

[@agepbiz]

Nice video! And that icecream slap was hilarious! Perfect editing.

[@DrFistyCuffs]

I made one in middle school using just the mousetrap for the body and I glued the string to the rear axle. It was exactly long enough to go the minimum distance required for the project before it caught itself and caused the car to do a sweet drift and stop right on the line

[@kevinshi7168]

scioly?

[@nika.5223]

This is a fantastic video, but I will say that in 8th grade my best friend and I were tasked with building a mouse trap car that didn't use a pulley system as a sort of "bonus" project. We built a tiny car, launched it with the mousetrap, and won the competition for our class. It believe it went almost double the next best vehicle's distance, and I personally built the 2nd place car.

[@DownhillAllTheWay]

Are all mouse traps created equal? Do you have to compensate for the differences between your mouse trap and the "standard mouse trap" kept at the Institute des Standards Scientifiques in Paris?

[@therealzilch]

That was my question as well. It seems pretty likely to me that different brands are different enough in stored energy to make the difference between winning and losing here.

[@Sharpless2]

hm... if it is like that, one would just have to find a Mouse trap, with the energy of a Rat trap and win everytime lmao

[@flaireartsanimations7628]

True we don't know💁

[@thhpoo3602]

Awesome thought

[@kalendraf]

They're not. When our class built them in 1986, we were given mousetraps to use. However, due to a mishap during construction, my team's mousetrap got broken, and we had to find a replacement. We ended up buying and trying several different brands and found the springs on some were significantly stronger than others. The weight of different brand mousetraps varied as well. In the end, we went with one that was as close to the original as possible so as to not have an unfair advantage.

[@pauljs75]

Was in a high school class that did this in the 1990's. The teacher had two criteria, first to 10' and longest distance traveled. So I had a car with a conical spool on the drive axle, which helps with both good starting acceleration and changing the drive ratio to stretch out the range. So I thought I was clever in trying to score well on both criteria. Turns out I wasn't clever enough... Some other kid in the class found a loophole. At the time the contest didn't stipulate that the mousetrap had to be part of the car, nor did it specify that the car must stay on the ground. So he had one of those Micro Machines toy cars and used the mousetrap to catapult it down the hallway. It flew about half the distance before bouncing off some lockers and skidding to the end of the hall. Thus insta-winning both categories, even if it wasn't in a way that was the intended nature of the contest. The teacher allowed that because he considered it fair given the provided rules, but changed the rules for the next class that did this project so no easy cheats could happen. I can only laugh about it though, since I was on friendly terms with the kid that beat my design. Nobody was allowed to copy each other, so I was wondering what strategy he had that would beat mine and I thought he was joking about it. (He wasn't wrong.) So what about my car? It ended up 4th in distance and 2nd on speed. Didn't have access to fancy bearings like others did for the distance, and only got the speed because everyone else trying for it spun their tires on the polished floor. However it did get awarded the most interesting design for having a novel approach compared to others. Everyone else thought the overall win strategy was too cheesy too.

[@kadenfurr9699]

I wish my school did things like this

[@cobbiliu6222]

absolute GENIUS

[@cobbiliu6222]

same

[@ExiAcc2]

Kaden Furr I did this in 7th grade

[@mrmanisaboy9037]

I tried to do that loophole because my teacher had only listed that the rules were the mousetrap car was solely powered by a moustrap. He was mean and changed the rules for this 2 days before the project was due.

[@owendennis3995]

I’m not in high school but I already love physics just from watching you

[@StormPlayz-mu3dz]

I’m in primary

[@xGonzo-su6ty]

I watched this video 5 years ago and thought about how fun it would be to make a mousetrap car, and now I'm a highschool junior in an engineering class making one that has to travel at least 60 ft. Ita gonna be fun

[@paxidium]

When he was talking about what people did to deal with lifting things in the past when he showed picture of the vehicles today Me: sees Crane Also me: wait...go back.

[@lettuce7378]

"I could move the earth if I had a lever strong and long enough" -Archimedes (supposedly)

[@aidanbeattie8341]

That lever would have to be 3 light-years long but yeah

[@lettuce7378]

@@aidanbeattie8341 lol yea

[@ashishere771]

@@aidanbeattie8341 well better get building

[@mrugankthatte4378]

And a place to stand*

[@lettuce7378]

@@mrugankthatte4378 yes

[@basicallyyes1796]

I’ve learned something new that I will probably never use

[@thatguynamedwil4577]

Basically Yes isn’t that what you call school?

[@senpaicity3334]

Big Brain

[@phroglord1402]

And thats school!

[@theaveragecomment1014]

School but without extra steps

[@FPVREVIEWS]

you can use the principles every time you drive your car or ride a bicycle.

[@LeFishee]

Mark Rober, im making it, the current best for my school is 33 feet, thanks mark, we will win

[@sienna8778]

Me: has to make a mousetrap car for school. My friend: “oh look Mark Rober made a video about it” Me: “now, this is our little secret no one else needs to know. We will win”

[@hmmtheyesguy]

Hahaha

[@Maria-in1sx]

Sameeee :))

[@yaoqijiang9118]

I didn’t watch it all the way through when I was making my car with my partner cuz I thought he was just some random guy. But I’ve got like 12 meters so yay!

[@caseyridens8329]

My car didnt move an inch

[@ooo2432]

Did u?

[@danknoodle657]

1:44 Mark:blah blah blah Rain:my time has come

[@abby_h18]

I'm 12 and don't understand most of what you're talking about, but your videos really entertain me.

[@duckyfam9012]

Abby H wow... me too lol

[@Abasnail400]

We were assigned to watch this in our science class today Amazing decision

[@ralph7349]

i just love how she punches the icecream out of marks hand

[@questionmark3073]

questacon 😇

[@cardmusician5355]

More of a slap but......

[@cringygameraheadbeware9162]

1:26 I bet that’s not helping your quest to be the greatest uncle!

[@razzi0718]

Well Mark, I’ve been waiting for a little over 2 months now.. So I hope(as usual) that this video is amazing just like all the other videos you make

[@razzi0718]

Oh sorry, Mark! I forgot about the NASA video, but really I meant a “physics” video where you explain the physics behind stuff like these mouse trap cars ;)

[@razzi0718]

Mark you are seriously such a massive inspiration to me. I take all the science classes at my school and I have shown your videos to my physics teacher which she really liked! You are an amazing person whom I would bet 1 million dollars on could be an amazing teacher too(you already are here on youtube)

[@yuriayato9154]

Hey Fun fact! Me and my group in a mousetrap car project got first place, thanks to this. It really helps. Thanks a lot for the ideas. Our task was the long distance car and we used the same principle as the world record type. Tip, you really need to calculate the ratio, if it’s to big the car won’t move at all. My group learned that the hard way. And everyone else in our class who tried the same principle gave up, because I would not move.

[@Finyata]

How do you mean calculate ratio? Like how do I know when it will move?

[@MyCatsNameIsRudolph]

Me: Not knowing what he’s talking about but still enjoying the video

[@RissyEditz]

Same😂

[@DrDoofnoof]

Same

[@leom8358]

same🤣

[@josephhanson334]

He is basically teaching torque

[@josephhanson334]

And basically gear ratio

[@Dan-of9km]

Imagine him being your physics teacher.

[@swordonme]

Alright class today were goi- suzie put that phone away before i burn it with this flamethrower!

[@gtplayz178]

Lol

[@gtplayz178]

I’d love that

[@marksmith7524]

I would pay for him to be my teacher

[@sketchhannen]

I love how he says his dream is to one day teach high school physics, like Mark, you could literally pick your school and I bet they'd hire you even if they already had one. Who in their right mind would turn this guy down? I get lost in these videos sometimes because they just make so much sense, and they teach you something about concepts you might have thought you'd never learn about in your life.

[@refundy5873]

The satisfaction you get when you learn about the stuff he’s talking about

[@pikinikbasketeer4309]

I could have sworn that intro was my high school, then I saw my old physics teacher, favorite teacher in all my time in school!

[@choop6816]

really doubt it

[@Omar-kt3xq]

I swear there will never be a better physics teacher ever

[@froggytimmy8643]

how dare u disrespect my boi Mr Slumper

[@darkinertia2]

Never soak bearings in wd40! It displaces water, and eventually pick up dust and dirt...if you wanna get rid of the lube, clean it with acetone or even orange cleaner. Thats what we do in skating and yoyos

[@seanehle8323]

Fun fact, the "WD" stands for water displacement. So I assume this corroborates your assertion.

[@ZeroQuantum.]

Mark is better at teaching me this than school ever has

[@CasimirSTEM]

I have been using this video with my students and it is VERY helpful! Thanks for making these GREAT videos!

[@benrees848]

I’ll be honest I did not come to this video expecting to laugh but when she slapped the iced cream out of his hand I lost it

[@benrees848]

bee boi but of course A) it surprised me which was the whole intention of that comment and that is why I laughed B) I’m in college

[@WaiSayR]

bee boi you're problably 12 if you commented that someone else is probably 12... o wait + ded memes

[@Shushjio]

You finally uploaded As a science nerd I love your content

[@windowsdylan8807]

IKR

[@crafteacat]

Yaaass

[@sharlsherif5710]

Quality content takes time.

[@piefadase]

Yaaah

[@eyebite7740]

jlaj mousey nerd is the correct term.

[@TheRiehlThing42]

We did this in 8th grade. We had two days to try it on. First day, I used Tinker Toy wheels. I only had tape to hold everything together, and my first attempt, the wheels spun and didn't go far. Tried again first day, my car broke, and pieces flew forward about 3 feet. I went home that night, and changed wheels to records, and found glue and more tape, and used Tinker Toy sticks to increase the length of the arm for the pull. Had built it all on my own, since my parents were divorced, and was at my mom's, and she worked graveyard and was sleeping while I was working on it. To get an A, had to get it to go further than 12 feet. Second day, my remodeled car made it 21 feet. The kid that one, he had laser discs he used, ball bearings, he had gone all out. This was in the early 90s. Was a lot of fun. You mentioned the straw bridge, my friend and I won our science fair competition in 8th grade. Another teacher entered, and accused us of cheating. My friend and I planned out our design, using triangles, and we were given one box of straws to use, and couldn't use more. We found we had used half the amount of straws we had available. I wasn't ready to go home, and just out of boredom, my friend folded a straw, and inserted it into another straw. I saw him do that, "hey, hold on!" And he paused, looked, and then he realized what I had just realized. We took apart our bridge, and folded half of our straws in half length wise, and inserted them into the other straws. We then rebuilt our bridge completely using these new combined strength straws. The teacher that competed against us, said we used straws that weren't provided by the science teacher. We showed the science teacher what we did, and he could count every straw if he wanted to, we did not exceed the amount. Our bridge won first place easily.