A Figure Skater Rotating at 5

question 60

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 he pulls in his arms so his moment of inertia decreases to 1.80 kg ∙ m²,what will be his new angular speed?

• A)2.25 rad/s
• B)4.60 rad/s
• C)6.25 rad/s
• D)0.81 rad/s

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