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A Person on a Rotating Stool with Arms Stretched Out

Question 17

Multiple Choice

A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s.On bringing in his arms,the angular speed increases to 7.50 rad/s.By what factor does the moment of inertia change? A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s.On bringing in his arms,the angular speed increases to 7.50 rad/s.By what factor does the moment of inertia change? A) 0.667 B) 0.750 C) 0.900 D) 1.25 E) 1.50


A) 0.667
B) 0.750
C) 0.900
D) 1.25
E) 1.50

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