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a playground merry-go-round has a radius of 3m and a rotational inertia of 600. It is initially spinning at .

a playground merry-go-round has a radius of 3m and a rotational inertia of 600. It is initially spinning at .8 rad/sec when a 20kg child crawls from the center to the rim, when the child reaches the rim the angular velocity of the merry-go-round is?

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