1. A bob of mass m, suspended by a string of lengC-th iis given a minimum velocity required to complete afull circle in the vertical plane. At the highest pointit collides elastically with another bob of mass msuspended by a string of length l2, which is initially at. Ifthe second bob, after collision acquires the minimumspeed required to complete a full circle in the vertical(JEE Ad. 2013)corest. Both the strings are massless and inextensibleplane, the ratio 11/12 is:

1. A bob of mass m, suspended by a string of lengC-th iis given a mini

1.	1. A bob of mass m, suspended by a string of lengC-th iis given a minimum velocity required to complete afull circle in the vertical plane. At the highest pointit collides elastically with another bob of mass msuspended by a string of length l2, which is initially at. Ifthe second bob, after collision acquires the minimumspeed required to complete a full circle in the vertical(JEE Ad. 2013)corest. Both the strings are massless and inextensibleplane, the ratio 11/12 is:
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