Dear @MarkRober, Could You Show Your Work Better, Please?

[@humantent945]

I feel like the content of Mark Rober's videos have been tuned more towards younger viewers, but I think at the very least he should put some sort of screenshots of the full methods in the description. Part of the appreciation of the final product for a lot of people comes from seeing the processes behind it, and for the people who are interested, it would be nice to follow along with his process.

[@FlippingPhysics]

I agree. And, when he shows his work like he did here, it would be much better if it were actually complete.

[@letsgofishing7471]

Thanks for making this video. As a fellow physics teacher I also noticed something amiss with the calculations. For us physics types, the devil is in the detail and these little things that seem nitpicky to the general public are really important. Just ask the scientists and engineers that worked on the 1998 Mars Orbiter the importance of things like units!

[@FlippingPhysics]

I had forgotten about that English vs. metric disaster. Such a good example of why this is so important. Thanks!

[@Abbe_Faaria11636]

whenever I open a textbook the first problem I get is trying to understand a given example in it, however they also do the exact same thing Mark did, not showing the complete work. thank u for the video.

[@FlippingPhysics]

I completely agree. It totally bothers me when textbook gloss over the real math. It's that frustration which led me to create the videos I do!

[@bendustin7609]

I completely agree. However, Mark's audience is the young who would never check any of this.

[@FlippingPhysics]

That may be true, however, he should still model good math. As a physics teacher, what he is doing here is something I always have to deprogram my students from doing. If they were able to see proper solutions from a young age, that would really help.

[@bendustin7609]

@@FlippingPhysics True... Thank you for your work by the way. I can't express how helpful your videos have helped me with school!

[@superdude3112]

Actually I probably would check

[@bendustin7609]

@@superdude3112 congratulations….. your sample size isn’t large enough

[@FlippingPhysics]

It is good to know there is one who would check. Also, you are absolutely welcome for my work. I am happy to help you learn!

[@yusufmustafa7323]

Really sir you are very perfect And I like your smart explainations

[@FlippingPhysics]

Thanks for the love!

[@samakshkaushik2860]

you are legit the best.

[@FlippingPhysics]

Thanks for the kudos!

[@yusufabdalla1106]

I love you, man.

[@FlippingPhysics]

Thanks for the love!

[@Asterism_Desmos]

“That’s a neighbors egg” that made me laugh, also, great video!

[@FlippingPhysics]

Glad you enjoyed!

[@pensivist]

I loved this video! I actually bother to check those things as well when I see them

[@FlippingPhysics]

Thanks for the love!

[@MrDan-nn6ti]

This was the one part of his video I was a bit disappointed by. I felt like if it was going to show the work at all it needed to be clearer. That was also the one spot in the video the pre-engineering instructor in the room next store had a negative comment. As a maths teacher I appreciate when stand-up maths, veritasium, and smartereveryday really get into the work in addition to the 'cool thing'. Regardless, great work by all. Keep the content coming!

[@FlippingPhysics]

Thanks. I was disappointed as well. Hence, my video.

[@isolatedpotato5757]

How would you incorporate how air density and "g" changes at such high altitudes into the equation?

[@FlippingPhysics]

Probably either calculus or a spreadsheet with data tables of air density.

[@redbaron07]

@@FlippingPhysics Yes, a spreadsheet with data tables is a great way to go. There are some analytic solutions for an exponential atmosphere but they require numerical solutions to evaluate height vs. time anyway. One feature of high altitude freefall is that once you hit maximum speed, your subsequent speed vs height is always _faster_ than the local terminal speed (until chute open!), since you are coming from more tenuous upper layers. So in the free body diagram the drag force > weight, i.e. you are always slowing down.

[@carultch]

As for changes in g with altitude, we're talking about a 3% difference within Earth's 100 km atmosphere. One place you might see changes in g with altitude matter, is if you were considering this thought experiment for a gas giant, where the atmosphere thickness is a much greater fraction of the planet's radius. This would have a practical application, if you were planning to the mission of a space probe to crash inside a gas giant, which NASA did with the Galileo Spacecraft.

[@redbaron07]

@@carultch Or NASA's Dragonfly mission to Titan!

[@fahrenheit2101]

I was gonna call this pedantry, but I suppose yes, as an educator, he'd do well to have more clarity in his work, whenever he shows it. The point shouldn't be to say "look, I actually did it", but to say "look, I did it, and here's how!"

[@vijayalaxmi-tr3jh]

Passion speaks!

[@FlippingPhysics]

Thanks!

[@copiryte9535]

The squiggle with inside the square is (.02) for radius but that would even further of the terminal velocity mark calculated!

[@FlippingPhysics]

I agree, however, I decided not to go the route of showing that, using 0.02 m for the radius, along with the other numbers, you actually get a terminal velocity that is, as I recall, more than 90 mph. The actual numbers are less important than showing your work so other people, and you, can understand what you did!

[@LE-pi5gq]

I totally agree! Seeing his work would give his videos so much more depth. Maybe if he made separate videos demonstrating his steps? I’m not sure. Great video as always!

[@Aztronomical695]

I totally agree with what you said

[@FlippingPhysics]

I (still) would love that.

[@lsauce45]

Hey Mr. P! I didn't found a video related to "Electric Fields on Uneven Surfaces" in your channel. I'm sure you might have a video about it. If you don't mind, Can you please link it here ? Thanks for your effort and keeping these video free.

[@FlippingPhysics]

The last part of this video is as close as I get to what you are looking for, I think: kzbin.info/www/bejne/oaPOhqV8Zcejes0

[@charlottelaww]

awesome video!!

[@FlippingPhysics]

Thank you!!

[@lizelleswanepoel116]

Had second guessed a lot of Mark Rober’s content since he started on KZbin years ago… NASA engineer no less 😂 @markrober

[@Bravo_L]

#1 🤝

[@FlippingPhysics]

I try

[@deathstramy7272]

Mom I swear it was the neighbors egg!

[@FlippingPhysics]

It was!!

[@outrunningtime-l8l]

this is meet the grahams for physics teachers

[@shawnlove7417]

Oh Engineers, when will you learn 😂

[@FlippingPhysics]

Tuesday

[@planeloverpilot4802]

@@FlippingPhysics lol

[@kelsar6841]

For quickie, go to Mark. For the art, go to physics.

[@Kaizen_19955改善]

It's neither mr P's egg or neighbour's egg it's chicken's egg

[@deathstramy7272]

I liked the video but imagine making it through school and being a nasa engineer for a guy on youtube to make a video to tell you your penmanship is illegible

[@FlippingPhysics]

There is a lot more to my criticism than "I cannot read your handwriting".

[@RDuder]

Comment for engagement

[@FlippingPhysics]

Reply for thanks

[@MongoosePreservationSociety]

i see you buried the jungle 50 seconds in you sneaky devil

[@FlippingPhysics]

Took me a bit, but I figured it out. You mean jingle. I always put the jingle where it makes the most sense. This time it was 50 seconds into the video.

[@nicholasesposito1204]

comment for engagement :)

[@FlippingPhysics]

Response of appreciation!

[@EleServiss]

+

[@FlippingPhysics]

ω

[@WarriorBane]

Mr P is vegan like me epic

[@FlippingPhysics]

Epic!

[@MrSupaman777]

I think that this is a little bit picky. His videos gets millions of views and it’s not a purely educational channel.

[@FlippingPhysics]

Actually, it is precisely because he has millions of views and he has a company, Crunchlabs, with the tagline "Think Like An Engineer", which seeks to educate kids, that I feel that, when he shows his work, he should show it well. And, he has "creative engineering" online classes where you can pay to learn from him. So, yeah, he's an educator and he should show his work well.

[@alleeshadior]

I feel like this is kind of clout chasing... A small channel leeching off of the popularity of a more successful channel.

[@FlippingPhysics]

Interesting. I would think "benefiting" would be a more apt term than "leeching". I felt I had useful criticisms of Mark's video, therefore, I felt it logical to make my video. Do you think this was not appropriate? If so, why not?

[@pensivist]

One could say is nitpicking. But I actually appreciate this kind of content and there's actual value delivered here. There are many misleading calculations showed in popular science videos. For the few (like me) that bother about it, this content is very useful.

[@FlippingPhysics]

Thanks!

[@planeloverpilot4802]

there is no clout chasing in the educational community my friend

[@LE-pi5gq]

I totally agree! Seeing his work would give his videos so much more depth. Maybe if he made separate videos demonstrating his steps? I’m not sure. Great video as always!

[@FlippingPhysics]

I would love that.