19: Angular Momentum
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- 19.3: Torque and the Time Derivative of Angular Momentum about a Point for a Particle
- We will now show that the torque about a point S is equal to the time derivative of the angular momentum about S.
- 19.8: Principle of Conservation of Angular Momentum
- Principle of Conservation of Angular Momentum argues that if the external torque acting on a system is zero, then the angular momentum of the system is constant. So for any change of state of the system the change in angular momentum is zero