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Two identical balls, each of mass m, are...

Two identical balls, each of mass `m`, are tied with a string and kept on a frictionless surface. Initially, the string is slack. They are given velocities `2u` and `u`. in the same direction. Collision between the balls is perfectly elastic.

What is the impulse generated in the string during the first collision?

A

`"mu"//2`

B

`"mu"//4`

C

`(2"mu")//3`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
For left ball: `I=mv-"mu"=m(3u)/2-"mu"="mu"//2`
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