A Figure Skater Rotating at 5

question 7

Multiple Choice

A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kg ∙ m².If the arms are pulled in so the moment of inertia decreases to 1.80 kg ∙ m²,what is the final angular speed?

• A)2.25 rad/s
• B)4.60 rad/s
• C)6.25 rad/s
• D)1.76 rad/s
• E)0.810 rad/s

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