Question a playground merry-go-round of radius r 180 m has, Ask an Expert

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Question: A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg Ã‚Â•m² and is rotating at 8.0 rev/min about a frictionless vertical axle. Facing the axle, a 24.0-kg child hops onto the merry-go-round and manages to sit down on the edge.

Question 1: What is the new angular speed of the merry-go-round?

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