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Unformatted text preview: 1 Physics 1D03 Angular Momentum III Angular Momentum III Examples with conservation of angular momentum General motion of a rigid body Collisions involving rotation Serway 11.4 Practice: Chapter 11, problems 29, 37, 39, 50, 53 Physics 1D03 Collisions: Collisions can conserve angular momentum as well as linear momentum . Total linear momentum is conserved if there is no external force during the collision (or if the external forces are small compared to the forces the colliding bodies exert on each other). Total angular momentum is conserved if there is no external torque during the collision (or if the external torques are small). 2 Physics 1D03 Quiz A student sits on a tree branch overhanging a merry-go- round platform that rotates freely. I. First, he jumps straight down and lands on the platform. The angular velocity of the platform: II. He then jumps back up and hangs onto the tree branch. The angular velocity of the platform: a) increases b) decreases c) stays the same a) increases b) decreases c) stays the same...
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