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 massless and inextensible. If the second bob, aftercollision acquires the minimum speed required to complete a full circle in the vertical plane, the ration L_(1)//L_(2) is

A bob of mass m, suspended by a string of length L_(1), is given a min

1.	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 massless and inextensible. If the second bob, aftercollision acquires the minimum speed required to complete a full circle in the vertical plane, the ration L_(1)//L_(2) is
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