Asked by Mikhail

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?

11 years ago

Answered by Elena

conservation of angular momentum
L₁=L₂
I₁ω₁=I₂ω₂
I₁/I₂=ω₂/ω₁

11 years ago

Answered by Jack

.60

9 years ago

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