Q.

A simple pendulum consisting of a ball of mass m tied to a thread of length l is made to swing on a circular arc of angle θ  in a vertical plane. At the end of this arc, another ball of mass m is placed at rest. The momentum transferred to this ball at rest by the swinging ball is 

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a

Zero

b

gl

c

llg

d

ml2πlg

answer is A.

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Detailed Solution

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No momentum will be transferred because, at extreme position the velocity of bob is zero.

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