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Rotation: Angular Momentum

Problem #: 2 | Variant #: 2

A 44.5 kg child is sitting on the edge of a 119.3 kg merry-go-round of radius 2.87 m while it is spinning at a rate of 2.749 rpm. If the child moves to the center, how fast will it be spinning? (Hint: use conservation of angular momentum)

rpm

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