A 600-Kg Skater Begins a Spin with an Angular Speed of of 6.0

question 20

Multiple Choice

A 60.0-kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her arms, the skater decreases her moment of inertia to one-half its initial value. What is the skater's final angular speed?

• A)3.0 rad/s
• B)4.5 rad/s
• C)9.0 rad/s
• D)12 rad/s
• E)18 rad/s

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A statistical measure used to describe the dispersion or variation of a set of data points by squaring their deviations from the mean.

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