Conservation of Angular Momentum Video Lessons

Concept

# 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:

$\overline{){\mathbf{L}}{\mathbf{=}}{\mathbf{I}}{\mathbf{\omega }}}$

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

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###### Problem Details

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

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Conservation of Angular Momentum concept. You can view video lessons to learn Conservation of Angular Momentum. Or if you need more Conservation of Angular Momentum practice, you can also practice Conservation of Angular Momentum practice problems.