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A playground merry-go-round of radius R = 1.20 m has a moment of inertia / = 255 kg-m2 and is rotating at 12.0 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. What is
the new angular speed of the merry-go-round? {convert units}
O 0.647 rad/s
O 1.11 rad/s
O 0.375 rad/s
O 1.31 rad/s
O 0.980 rad/s
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