A bob of mass m, suspended by a string of length l 1 , is given a minimum velocity required to complete a full circle in the vertical plane, At the highest point, it collides elastically with another bob of mass m suspended by a string of length l 2 , which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio 
is :
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(5)
To complete the vertical circle
= 
= 5
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