Point Particle & Rigid Object Collision - Conservation of Angular Momentum Demonstration & Problem

[@SlickRick4EVER]

Yay!! You're back!

[@FlippingPhysics]

Thanks. It is good to be back!

[@NeonArtzMotionDesigns]

Look at you back on the upload grind :)

[@FlippingPhysics]

Yes! I am back and excited to share more videos with y'all. It was strange to be away for so long... Although, I will say, I am no longer going to consider it a grind. If I don't have enough videos to publish weekly, I am simply not going to worry about it. I am just going to let it go.

[@NeonArtzMotionDesigns]

@@FlippingPhysics ahhh makes sense, ya know if you don't have any video to upload, it is what it is, nothing to worry about

[@riemanndiy6693]

would be possible in some way to calculate the revolutions that the RID makes before it stops? Which approach should we use? Thanks for your great job

[@thericecookingshow2657]

Good video

[@panyida]

great, 1 month of waiting hahah

[@FlippingPhysics]

I hope it wasn't too long for you.

[@Droxhin]

Please can you do something about Billy I really dislike him, he makes me uncomfortable.

[@andrewjustin256]

😂 You're infatuated in malice and hatred towards him!! Because he's awesome! 😎

[@TheAnimammal]

Dear sir, I am not convinced. 3.6% is a very large discrepancy and it is way outside the margin of error. Perhaps it might be explained through friction losses or mechanical losses due to deformation, but without presenting proper investigation, it is wishful thinking to claim "Physics works". Perhaps it actually doesn't. In fact, so far, you have actually proven that physics doesn't work. It is also deceptive because angular momentum may appear to be conserved in this example purely because rotational kinetic energy is conserved. To test angular momentum conservation against angular energy (A term I invented. It is synonymous with rotational kinetic energy, except that it is conserved instead of angular momentum), we need to use a variable radii system. The best one for that is the original, simplest, best and only model of a one body problem that we have. The ball on a string. Please will you measure that without yanking because you will then confirm for yourself that it is in fact angular energy that is locally conserved and not angular momentum globally.

[@shailkumarjain]

Sir, could you please clarify more on this point "It is also deceptive because angular momentum may appear to be conserved in this example purely because rotational kinetic energy is conserved" thank you..

[@TheAnimammal]

@@shailkumarjain You appear confused. L = r x p. If you conserve |p| and change |r| then angular momentum must change because it is on the opposite side of the equation.

[@shailkumarjain]

@@TheAnimammal yes Sir, i am confused as novice in mechanical physics concepts, i am using online medium to learn as of only source to learn available to me and i feel critical thinking amd critical comments are key to learning so i do check comments as to understand doubts and queries.

[@TheAnimammal]

@@shailkumarjain Personally, I believe that you are pretending to be stupid because you imagine that it will suit you to have your opponent believe you are stupid. Is it clear from the equation L = r x p, that if we do not change the radius, then angular momentum will not change because p is conserved and will not change (Assuming that we discuss rotation, so the direction is obviously always changing) ? Is it clear that you cannot conserve both L and p in magnitude while you change the radius?

[@shailkumarjain]

@@TheAnimammal thank you for taking time to reply. I am not trying to make anyone believe my intelligence or stupidity. As i said I am using online platform to learn. As i saw a critical comment on the video by you and tried to understand it, failing which i messaged to clarify. That is all, i have no other motive... Thanks again.