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A 24-kg boy stands 6 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 240 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground.

(a) Calculate the angular velocity of the merry-go-round?

(b) Calculate the speed of the boy relative to the surface of the merry-go-round?

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