As shown below, bob 
of a pendulum having massless string of length ' 
' is released from
to the vertical. It hits another bob 
of half the mass that is at rest on a friction less table in the center. Assuming elastic collision, the magnitude of the velocity of bob A after the collision will be (take 
as acceleration due to gravity.)
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(4)
Velocity of a just before hitting:
Just after collision, let velocity of A and B are 
and 
respectively
by COM:
From (i) -(ii)
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