A merry-go-round is at rest, pivoted on a frictionless axis. A child of mass m runs along the path tangential to the rim with speed v and jumps on to merry-go-round. If .Ris the radius of the merry-go-round and I is the moment of inertia, then the angular velocity of the merry-go-round and the child is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
By law of conservation of angular momentum
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