NDLI: Merry-Go-Round - Conservation of Angular Momentum Problem

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Merry-Go-Round - Conservation of Angular Momentum Problem

Content Provider	WatchKnowLearn
Description	A 25 kg child is sitting on the edge of a #merry-go-round. The merry-go-round has a mass of 255 kg and is rotating at 2.0 radians per second. The child crawls to the middle of the merry-go-round. What is the final angular speed of the merry-go-round? You may make the following estimations: The child is a point particle; the merry-go-round is a solid disk and has an axle with negligible friction. #AngularMomentumConservation Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:07 Translating the problem from words to physics. 1:32 Why the angular momentum of the system is conserved. 3:21 Using the equations for angular momentum and rotational inertia. 4:22 Substituting in equations and variables to solve the problem. 6:06 Understanding why the angular velocity of the system increased. 7:44 Finding the change in kinetic energy of the system. 8:55 Understanding why the change in kinetic energy of the system is positive. Next Video: Which Direction will the Wheel Accelerate? Multilingual? Please help translate Flipping Physics videos! Previous Video: Wheel Conservation of Angular Momentum Demonstration and Solution Please support me on Patreon! Thank you to Scott Carter, Cameron Vongsawan, and Christopher Becke for being my Quality Control Team for this video.
Language	English
Access Restriction	Open
Rights License	Proprietary
Subject Keyword	Rotational Motion k-12 homeschool homeschooling home school parents educational videos k12 preK-12 Physics Mechanics Science
Content Type	Video
Educational Role	Student Teacher
Educational Use	Self Learning Lecture
Education Level	Class VIII Class XI Class IX Class XII Class VII Class X
Pedagogy	Chalk-and-talk Lecture cum Demonstration
Resource Type	Video Lecture
Subject	Rotational Motion

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