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

Question

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

Quizplus · Accepted Answer

The Answer of 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 Person on a Rotating Stool with Arms Stretched Out