In Fig. 11-56, a 30 kg child stands on the edge of a
Chapter , Problem 63(choose chapter or problem)
In Fig. 11-56, a 30 kg child stands on the edge of a stationary merry-go-round of radius 2.0 m. The rotational inertia of the merrygo-round about its rotation axis is 150 kg "m2 . The child catches a ball of mass 1.0 kg thrown by a friend. Just before the ball is caught, it has a horizontal velocity of magnitude 12 m/s, at angle f ! 37( with a line tangent to the outer edge of the merry-go-round, as shown. What is the angular speed of the merry-go-round just after the ball is caught?
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