A 40.0-kg child running at 3.00 m/s suddenly jumps onto a stationary playground merry-go-round at a distance 1.50 m from the axis of rotation of the merry-go-round. The child is traveling tangential to the edge of the merry-go-round just before jumping on. The moment of inertia about its axis of rotation is and very little friction at its rotation axis. What is the angular speed of the merry-go-round just after the child has jumped onto it?
A) 0.261 rad/s
B) 3.14 rev/s
C) 2.00 rad/s
D) 6.28 rev/s
E) 0.788 rad/s
Correct Answer:
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