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Unit 6: Energy and Momentum of Rotating Systems

Conservation of Angular Momentum

Decide when a system's angular momentum stays constant, and use that to solve spin-up, coupling, and pivoted-collision problems.

Topic 6.4 · 11 min read

This lesson comes with the AP Physics C: Mechanics plan

In this lesson

  1. 01Total angular momentum is a sum over the parts
  2. 02Only external torques change it
  3. 03A system that changes shape changes speed, not angular momentum
  4. 04Rotational collisions and couplings
  5. 05Worked examples
  6. 06Where students lose points
  7. 07On the exam

The first units’ lessons are free. The plan opens every lesson, every practice question with worked solutions, your study plan and calendar, for $14.49 a month. Cancel any time.

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