Q 1144656553.     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 of `l_1/l_2` is

JEE 2013 Mains
A

`0`

B

`1`

C

`2`

D

`5`

HINT

Conservation of energy.

Today's Score

0
Success Rate: NAN %

Practice & Test

Sr. No.SubjectTagCorrectRecorded Answer