According to the conservation of angular momentum,if an ice skater starts spinning with her arms out wide,then slowly pulls them close to her body,this will cause her to
A) spin faster.
B) spin slower.
C) maintain a constant rate of spin.
D) fall over.

Question

Quizplus · Accepted Answer

The conservation of angular momentum states that the total angular momentum of a system remains constant unless acted upon by an external torque. In this case, the ice skater has an initial angular momentum with her arms out wide. As she pulls her arms in, her moment of inertia decreases, but to conserve angular momentum, her angular velocity must increase. Therefore, the ice skater will spin faster.

According to the Conservation of Angular Momentum,if an Ice Skater