Conservation of Angular Momentum Video Lessons

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Problem: When a twirling ice skater brings her arms inward, her rotational speed increases decreases or remains the same. Why?

FREE Expert Solution

Angular momentum:

L=Iω

Bringing the arms inwards changes the moment of inertia of the system. 

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When a twirling ice skater brings her arms inward, her rotational speed increases decreases or remains the same. Why?

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