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Rotation: Angular Momentum

Problem #: 2 | Variant #: 2

A 23.2 kg child is sitting on the edge of a 127.3 kg merry-go-round of radius 2.5 m while it is spinning at a rate of 4.397 rpm. If the child moves to the center, how fast will it be spinning? (Hint: use conservation of angular momentum)


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