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In the previous problem , if the horizon...

In the previous problem , if the horizontal surface is rough with friction coefficient `0.5` and collision is elastic , head - on , the distance travelled by the block on the rough surface

A

`5 m`

B

`10 m`

C

`15 m`

D

`20 m`

Text Solution

Verified by Experts

The correct Answer is:
B
After the head - on collision , velocities will be exchanged.
`0 = v^() - 2 mu gd`
`0 = 2gL - 2 mu gd`
`d = (L)/(mu) = (5)/(1//2) = 10 m`
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