A 30 kg child stands on the edge of a stationary merry-go-round of mass 100 kg and radius 2.0 m.  The rotational inertia of the merry-go-round about its axis of rotation is 150 kgm2.  The child catches a ball of mass 1.0 kg travelling at 16 m/s at an angle Ø=37º thrown by a friend.  If the merry-go-round starts at rest, what is the angular speed of the merry-go-round just after the ball is caught.

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A 30 kg child stands on the edge of a stationary merry-go-round of mass 100 kg and radius 2.0 m.  The rotational inertia of the merry-go-round about its axis of rotation is 150 kgm2.  The child catches a ball of mass 1.0 kg travelling at 16 m/s at an angle Ø=37º thrown by a friend.  If the merry-go-round starts at rest, what is the angular speed of the merry-go-round just after the ball is caught.

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