Aperson ofmass 75 kg stands at the center of a rotating , Physics

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Aperson ofmass 75 kg stands at the center of a rotating

A person ofmass 75 kg stands at the center of a rotating merry-go-roundplatform of radius 2.8 m and moment of inertia 1300 kgm2. Theplatform rotates without friction with angular velocity 3.0 rad/s.The person walks radially to the edge of the platform.

(a) Calculate the angularvelocity when the person reaches the edge.

rad/s

(b) Calculate the rotational kinetic energy of the system ofplatform plus person before and after the person'swalk.

J(before)

J(after)

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Physics: Aperson ofmass 75 kg stands at the center of a rotating

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Physics: Aperson ofmass 75 kg stands at the center of a rotating

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