Angular Momentum and a Pulley Mass System (18:12)
Angular momentum is used to determine the acceleration of a pulley mass system. two alternate solutions are shown, and the acceleration is demonstrated. This is an AP Physics C: Mechanics topic.
0:00 The Problem
1:50 The Free Body Diagrams
3:59 All the Angular Momenta
7:44 Net Torque
10:55 Torque Pairs which Cancel
12:19 Solving for Acceleration
14:07 Alternate Solution #1
14:47 Alternate Solution #2
16:24 Demonstrating The Physics Works!