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Skater's Final Angular Velocity

An ice skater starts spinning at the rate of 1.5rev/s with arms extended. she then pulls her arms close to her body, resulting in a decrease of her rotational inertia to three-quarters of her initial value. What is the skater's final angular velocity?

Solution Preview

We know that her kinetic energy should be constant
Let
w1=angular speed with arms stretching, ...

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The solution provides detailed explanations and calculations for the problem.

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