Torque Introduction

[@ChronicleEpicGamer]

Start of the video: Students: looks clueless about torque End of the video: Students: PhD in torque

[@marthaoleary9116]

I wish my Physics teacher could teach physics like this. I learn AP Physics 1 by watching Flipping Physics videos and then reading and solving problems from a College Physics textbook. Thank you Flipping Physics.

[@thenothingking]

Man screw my textbook, this just explained everything to me so easily and clearly in 10 minutes

[@FlippingPhysics]

Welcome to me channel.

[@lucasargandona4658]

Reading the textbook gives me physical pain

[@yashaswinijoshi5845]

You always address the most common questions that students have about a particular topic and give awesome explanations. Thank you for your videos!

[@FlippingPhysics]

I do my best. Thanks for noticing!

[@noahway13]

@@FlippingPhysics I'm dealing with a problem in real life. So, it seems that the closer you get to the rotational axis, the more you are trying to impart translational motion. Say, if you are pushing on a very flimsy door right next to hinge, it is likely to fall down, but if you pushed on opposite side near the knob, it would easily rotate. Is there video on this?

[@jasminehaddad5415]

I just want to say that as I serve a missionary physics teacher with minimal resources, all of your videos are lifesavers in explaining concepts to my high school students!

[@FlippingPhysics]

Wow. Please tell me more about this. My father was a medical missionary. He performed eye surgeries and taught local doctors how to do the surgeries. When I was 11 my whole family joined him in Cameroon for a month on mission. I wish I could duplicate what he did, however, that is not where my skill set is. Instead I create these videos in hopes that I can help people learn who would otherwise be unable to do so. If you do not feel comfortable telling me more in a KZbin comment, feel free to email me: [e-mail]

[@Abdell543]

My job is a dentist, and this lesson is very important to the torque in orthodontics treatments.. Thank you.

[@khanfalia]

my first couple of paychecks after I graduate I will be donating to you, Khan Academy & Patrick JMT. Thank you for now!

[@FlippingPhysics]

Wow. Thank you! I look forward to that!

[@FlippingPhysics]

Any chance you could help me out by doing what I ask people to do in the following video? bit.ly/2y4tOCA It would be a great way to show your appreciation!

[@sujalbaskey4569]

Hii

[@jblover1041]

For someone who is in university right now and never learned about Torque in high school, this video is phenomenal! Thank you so much :)

[@ok-kb7yz]

This deserves 10 million subscribers

[@FlippingPhysics]

Thanks!

[@tremywoods3544]

You did what the entirety of my university's Physics department (head TAs, prerecorded lecture videos, live lecturing from my Professor, TAs from Office Hours/Discussion, textbook written by department) could not: make me understand torque, and in 10 minutes. I feel like all of the equations thrown at me didn't make sense until you covered them the way you did so THANK YOU.

[@FlippingPhysics]

That is high praise. Thank you!

[@northernlight1000]

So much better than my university class on this relatively simple subject, I loved how definitions were first shown and clear, my class relies way too much much on intuitions giving little explanations/references back to what the definition of the damn thing actually is. Thanks!

[@clintn.kildepstein1656]

I love how much fun you had trying to open the door at 6:20

[@imzayn]

Mannnnnnnnnnnnn ! i don't know how to explain but you're just awesome ! you did hard work to explain this to us... and your examples was so solid and so easy ! i'm just so impressed from the way you teach !

[@FlippingPhysics]

Thank you so much 😀

[@julianramos8589]

Thank you so much! you have no idea how your examples makes everything easier to understand. You deserve 1 billions subscribers.

[@AdityaMahat]

Today, after 14 years finally I understood the concept of Torque. Thank you.

[@FlippingPhysics]

Wonderful!

[@AdityaMahat]

@@FlippingPhysics You are indeed a legend. Thank you again. Also, love your concept of video and kudos to your video editing. It only made it more clear.

[@emilys5752]

I have my college physics final this week and one of the topics I've been struggling with is torque, so this video came at the perfect time! It makes so much more sense now. Thank you!

[@FlippingPhysics]

So glad to help you out! If you send me the email you use with KZbin, I will share a couple of upcoming videos about torque with you privately before they are made "public". jon at flippingphysics dot com

[@prince01336]

@@FlippingPhysics Can you just give me reason, why do you want to share it to someone before even publishing it.

[@FlippingPhysics]

@@prince01336 I have a small group of people who preview the videos before they are public to check for mistakes. That way I can fix mistakes before the videos go public. flippingphysics.com/quality-control.html

[@faizraza3970]

I really understand this first time ....thank you so much Sir. Love from India 🇮🇳

[@FlippingPhysics]

Wonderful!

[@Kenzo_254]

You are the teacher everyone wishes they had. Wish I had found this channel earlier. Regards

[@AdityaSharma-nw1ri]

today i am feeling like i took lecture by walter lewin sir , sir you are great ...love from INDIA..THANK YOU

[@FlippingPhysics]

High praise. Thanks!

[@audreygeorges4982]

Round of applause for this amazing creator! I'm currently a first year Electrical Engineer in college and these videos are really helping me understand physics. Thank you so much!

[@besilent9038]

He is a really good teacher. Thank you. From Kurdistan

[@LEIITIS]

I was missing those “real life applications” THANK YOU! Torque makes so much sense now

[@pranavarneja9522]

wonderful explanation ! even a person with nominal intellect could grasp this with slight knowlede on high school mathematics. Kudos to this guy

[@aparnab928]

I haven't ever been to such a physics class where I could get answer for every 'WHY'...

[@pamer7861]

you are a legend

[@FlippingPhysics]

thanks. FYI: According to John Eliadis, I am also a bob. kzbin.info/www/bejne/e56qlHWEiq-CmpI

[@FlippingPhysics]

Any chance you could help me out by doing what I ask people to do in the following video? bit.ly/2y4tOCA It would be a great way to show your appreciation!

[@muhammadahmer1394]

What is the effect of torque on earth

[@creammints7400]

Thank you so much for this, since we started online learning my teachers have just wanted us to read the textbook but I'm one of those people that have to listen along and see what's happening to understand things and this has just saved my butt. It's really nice for you to teach us all and for free!

[@FlippingPhysics]

Glad you think my videos are better than textbooks!

[@ronalds271]

This video helped me understand Torque for AP Physics 1 class.

[@FroggyMosh]

This is awesome! I love that you're essentially having Kerbals in class. It's exactly the sort of associations I need to have a hope to retain at least a fraction of this. So well explained too. I'll be checking more of this out.

[@FlippingPhysics]

You are certainly welcome!

[@EH-gi1id]

This is a great video. Also, I learned that the sound of a hand on a bicycle wheel gives me shivers down my spine.

[@nguyentien4131]

I really appreciate your video. I'm today years old to realize that maybe a 3-hour lecture is not as good as 7-minute video @@

[@display9138]

Best physics teacher he makes everything easy

[@cboyslim5490]

your videos are keeping me at a B+ in my first ever physics class in college

[@yourroyalhighness6297]

Other college graduate students might think: My life could have been easier if I just learned about this channel when I was about to take my exams.

[@jamesm.3829]

the AP test is coming up and my teacher never mentioned the lever arm. Thank you!

[@lilliansullivan6877]

My man! I finally understand it and I want to study more. I’m finally excited learn more and do more problems

[@FlippingPhysics]

I hope you enjoyed the problems!

[@aiswaryathilakan2588]

very nice explanation and presentation.Thank you

[@artsydai4818]

We're starting rotational motion and i hope to gods this unit doesnt chew me up and spit me out. Your videos helped with the momentum unit so hopefully i can understand rotational motion :')

[@FlippingPhysics]

I have hope for you!

[@abdulrahmanalzaabi800]

My Ap physics c exam is in few months and I am having bad time with physics but your videos are helping me by taking some weight from my shoulders . Many thanks to you!

[@FlippingPhysics]

You are certainly welcome. Best of luck on the exam!

[@bern1223]

this is the best physics tutorial i have ever seen!!

[@FlippingPhysics]

Thanks!

[@adrianagil4412]

You are the best at teaching physics. Even my college teachers make us see your videos as home work :) Thank you sooo much

[@FlippingPhysics]

Thank you for your kind words!

[@danielmerrill8193]

This is an amazingly well put together and cogent description of torque. Thank you for this. I am pointing my students toward it as supplement to their classroom instruction.

[@FlippingPhysics]

Thank you for that!

[@yusufmustafa7323]

One of the best physics channel

[@FlippingPhysics]

Thanks!

[@faumv4337]

you are a genius, i love your videos, it helped me so much, thanks!

[@FlippingPhysics]

You are very welcome!

[@amnarahman3157]

Amazingly explained 👍

[@lucasgabriel709]

Thank you for explaining the topic clearly.

[@FlippingPhysics]

You’re welcome.

[@addy7464]

Thanks a lot..... I finally got the "feel" for torque.

[@marcochimio]

Outstanding lecture; very helpful. I was wondering why is the convention to express torque = (rsinx)F where x is the angle, and NOT torque = r(Fsinx). I find it much easier to think about the perpendicular component of the applied FORCE as being the force used to create torque, rather than considering the perpendicular component of the r vector. Is there something wrong with this viewpoint? Are there examples when this just wouldn't work, or it is somehow fundamentally wrong to view forces this way in torque problems?

[@LockurasEnVivo]

Your introduction just gave u a new subscription right away haha brilliant!

[@vm9846]

Regardless of what physics topic it is, you are always the most helpful! I always get the "Aha!" moment with your videos! Thank you so much for helping all of us!

[@FlippingPhysics]

Happy to help!

[@kolyabobbitt7885]

Better explained than my phd professor could ever do.

[@cj7india957]

Best explained videos you bring for uss sir thank uhh so much. ..love from India ❤

[@sgtghost141]

Sir , you have explained it so well that I got the idea of What Torque And How does it Act. Thank you very much. One doubt , What do we mean by Angular Acceleration?

[@FlippingPhysics]

Please enjoy this: www.flippingphysics.com/angular-acceleration.html

[@sgtghost141]

@@FlippingPhysics Gracias senor!

[@fredd298]

*neighbor waves from front porch* "Mornin' Bill!" *mr p* : 0:53

[@iliyansvm_11]

underrated comment right here lmfaoo

[@anon_ninja]

PLEASE KEEP MAKING THESE! WONDERFUL WORK!

[@FlippingPhysics]

I will do my best. Thanks!

[@joaocosta3506]

best torque explanation ever, thanks!

[@anitaraniparida5832]

Awesome explanation..Its a topic or concept required to be cleared for every exams..

[@FlippingPhysics]

Thanks!

[@yensall]

Extremely helpful! Thank you! Btw video is awesome

[@mybabyalulu]

this is awesome in ways I cannot explain. YOU are awesome in ways i cannot explain. THANK YOU FOR MAKING SENSE OUT OF STUFF THAT DOESNT MAKE SENSE!!!

[@FlippingPhysics]

I would argue that it does make sense, however, it can sometimes be difficult to understand. Glad I am able to help you learn!

[@chimaeria6887]

Thanks for this educational video.

[@FlippingPhysics]

You are welcome.

[@shahdalamoudi4075]

Wow wow this is just impressive! Plz keep up the great work, students need those kind of videos

[@FlippingPhysics]

Thanks for the love my friend!

[@MrChips-oh9de]

It's the first time seeing your videos but i wish i saw this sooner, and thank you i really learned a lot from this. ☺️

[@miguelandrade6239]

Wow the class was amazing, I didn't understand anything about torque in my University but now I've realized is pretty interesting and kinda easy. Ty so much

[@FlippingPhysics]

Glad it was helpful!

[@lopx6]

Best explanation I’ve seen so far!!! Thank you so much, this is so helpful 💓😢.

[@Kassanderz]

this video dried up my tears!! thank you so much!

[@FlippingPhysics]

Wonderful!

[@simthandileqhunyana1798]

tell you what i dont have a text book but Im coping on my course ,thanks to your videos

[@SolSrchnRo]

Thanks this helped me understand way more!

[@levicoovert]

Is the middle guy supposed to be high?

[@raptorhittingacademy8118]

Very interesting about torque. You used the example on a door. Can you use an example such as a swing in baseball?

[@diegokher]

thank you so much for your dedication doing this videos, makes me perfectly understand the concept and have a good time watching the video, blessings for you, thank you!!

[@novakdjokovic7458]

Respect this guy !!! Torque is fine for me now, but I need to learn about magnus effect to know about Nadal's banana Shot . Dude I respect you for what you're doing !!!

[@gopalkamble1263]

Your students are so clever...

[@Mech.Masters]

Why the direction of r is from the hinge to the force and why not vice versa?

[@FlippingPhysics]

Torque is the cross product of r and F. In this algebra based course, we don't use the cross product, however, that is how it is defined. Therefore the r vector is defined as a vector from the axis of rotation to where the force is applied to the object.

[@Mech.Masters]

@@FlippingPhysics Got it. I appreciate your interest in physics. Keep making such videos

[@Mech.Masters]

Torque is also = Moment of inertia x Angular acceleration. How will we know whether to use T = F x r or T = I x aplha?

[@FlippingPhysics]

Torque does not equal moment of inertia times angular acceleration. _Net_ torque easel moment of inertia times angular acceleration. Very big difference there. Also torque does not equal F x r, torque equals r x F. Cross product is not commutative.

[@Mech.Masters]

@@FlippingPhysics I am waiting for your other video on torque

[@prince01336]

@@FlippingPhysics Oh Thanks! You even clear our silly doubts too..

[@OmarWaelAhmed]

Mr P, I wonder why we don't resolve the applied Force vector _F_ instead of the position vector _r_ . I learned that the cross (vector) product between any two vectors, say _A_ and _B_ , equals *|| **_A_** || . || **_B_** || sin(angle between **_A_** & **_B_** )* . So, vector _F_ cross vector _r_ equals *|| **_F_** || . || **_r_** || sin(theta2 OR theta1)* . We deliberately take sin(theta2 OR theta1) with || _r_ || to get the magnitude of a component of vector _r_ that is perpendicular to vector _F_ (aka, moment arm) , but why we don't take sin(theta2 OR theta1) with || _F_ || to get the magnitude of a component of vector _F_ that is perpendicular to vector _r_ instead ?? For me, resolving the force vector makes much more sense about how torque works than resolving the displacement vector (I have never encountered a situation in which I had to resolve a position vector in Physics). Maths is the same in both cases, it is the intuition that matters. You are a remarkable teacher. " _Teachers who make Physics boring are criminals_ ", *THANKS FOR NOT BEING A ONE.* Gigantic Love from Egypt. *_DFTBA!_*

[@FlippingPhysics]

Technically torque is the cross product of *r* and *F* . Because this is for an algebra based course, we don't use the cross product. Realize the cross product of *r* and *F* is _not_ the same as the cross product of *F* and *r* , which is why we resolve *r* and not *F* . You can see my in-class lecture video on it here. kzbin.info/www/bejne/h5aan4l-g56tsNE Thank you for your kind words, by the way.

[@OmarWaelAhmed]

@@FlippingPhysics Aha! Sincerely, you are AWESOME. Thanks in advance.

[@Bajrangbali-c3d]

Thank you sir for making video.

[@raymondandrezonlopulalan1137]

Bro flipin it🔥🔥

[@FlippingPhysics]

yep.

[@davidkariuki6777]

This has helped me so so much. Thank you!

[@squirrlykinssquirrel1359]

Does dayofdev sort by new?

[@muralidharan180]

Can u explain what will be the force needed when u fix a long handle on the vertical side of the door instead of the knob.

[@FlippingPhysics]

Please see: www.flippingphysics.com/torque-wrench.html

[@christopherbortz8838]

Wow, identical quadruplets ;-p I agree with prior commentators, this made torque MUCH easier to understand. Great Job!!

[@FlippingPhysics]

We do look quite similar ...

[@kavin4388]

Hi, just one question. Does the object have to rotate from its center of mass? for example, on a plane I'm pretty sure the lift force means that the plane never actually rotates on the center of mass, theres a separate center of rotation. Would you find this by finding where the net torque equals 0?

[@МариСазонова-р8в]

Thank you so much for ur videos, Mr. P! They help me so much in physics! Not only that, they are very enjoyable too; always make me smile :)

[@FlippingPhysics]

Smile and learn. Wonderful combo!

[@Mech.Masters]

I feel you should also make a video on torque using moment of inertia x angular acceleration.

[@FlippingPhysics]

Currently writing that script.

[@Inzemam1]

Sir some thing is confusing me As you said that torque is the force which is applied on a bound body, then how that force can be equal to r and that force

[@sabergon3081]

Bless this man and his hilarious spirit x)

[@omkarkeche8200]

T = Ia so near the door torque decreases so a decreases but what about moi near door moi decreases so a increases?

[@photonium7]

THANKS SIR I WAS NOT ABLE TO UNDERSTAND THAT EXAMPLE OF DOOR COZ DIDN'T KNOW ABOUT THE AOR AND TRY MANY TIMES TO RELATE BY MATHEMATICAL EQUATION . THANKS !! 😍

[@alirazaali6101]

Sir if the angle between moment arm and force is 270° then what will be the torque? As sin270=-1.The magnitude of torque becomes negative.What does it mean?

[@FlippingPhysics]

The right hand rule determines the direction of torque, not the positive or negative value you get from sinθ. See: www.flippingphysics.com/torque-right-hand-rule.html

[@durafshan257]

Magnitude of vectors are always positive.At angle 90 and angle 270,torque will maximum as sin90and sin270=1.

[@nasirkhalid6770]

Great as always 😍

[@FlippingPhysics]

Thank you sir!

[@shivamkokane7885]

Shared your video to all my friends , you are awesome

[@FlippingPhysics]

This is very kind of you. Thanks!

[@ersbig9524]

Mr. P what is the difference between a torque and a moment?

[@mindsetminutelive]

Dude, this is funny and it really helps, and I love your Dear Evan Hansen shirt.

[@durafshan257]

Can single force create torque?

[@jamil5522]

Yes

[@ridwanhusainishraq]

does centrifugal force cause torque?

[@raghavjetski7537]

Imma throw away my physics book right now If you assure me that you’ll make videos like this

[@abhisheaksharma3765]

Very nice Mr. P

[@ersbig9524]

Please I still don't get what the moment arm is

[@mhavock]

These 4 guys explained it well! thanks! 🤣🤣🤣

[@FlippingPhysics]

"Our" pleasure!

[@greengirl4985]

Thank you so much!! what an amazing video!!!

[@rajatbedhadak3130]

It was very helpful sir....