Question: A figure skater begins a spin at an angular velocity of 200 rpm with her arms and legs out away from her body (Fig. 9.11A).

A figure skater begins a spin at an angular velocity of 200 rpm with her arms and legs out away from her body (Fig. 9.11A). She then pulls her arms and legs in close to her body, and her angular velocity increases. Estimate her final angular velocity.

Concerned with the magnitude of the angular momentum, not its sign.

Figure 9.11A

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