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Q. A person of mass 80 kg stands at the center of a rotating merry-go-round platform of radius 3.5 m and moment of inertia 920 kg cdot m^2. The platform rotates without friction with angular velocity 0.85 rad/s. The person walks radially to the edge of the platform.

Determine the angular velocity when the person reaches edge.

Determine the rotational kinetic energy of the system of platform plus person before the person's walk.

Determine the rotational kinetic energy of the system of platform plus person after the person's walk.

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Category:- Physics
Reference No.:- M9357841

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