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A playground merry-go-round of radius R = 1.80 meter has a moment of inertia I = 240 kg•m2 and is rotating at 8.0 rpm about a frictionless vertical axle. Facing the axle, a 25 kilogram child hops onto the merry-go-round and manages to sit down on its edge. Find the new angular speed of the merry-go-round?

_______ rpm

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