A playground merry-go-round of radius R 5 2.00 m has a moment of inertia I =250 kg.m and is rotating at 10.0 rev/min about a frictionless, vertical…

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A playground merry-go-round of radius R 5 2.00 m has a moment of inertia I =250 kg.m

and is rotating at 10.0 rev/min about a frictionless, vertical axle. Facing the axle, a 25.0-

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?

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