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A playground merry-go-round of radius 2.3 m has a moment of inertia 251 kg.if and is rotating at 13 rev/min about a frictionless vertical axle.

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A playground merry-go-round of radius 2.3 m has a moment of inertia 251 kg.if and is rotating at 13 rev/min about a frictionless vertical axle. Facing the axle. a 35 kg child hops onto the merry-go-round. and manages to sit down on the edge. What is the new angular speed of the merry-go-round? Answer in units of rev/ min. Answer in units of rev / min

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