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A ball of mass m=6kg is shot with speed ...

A ball of mass `m=6kg` is shot with speed `v=20m//s` into a barrel of spring gun of mass `M=24kg` initially at rest. All surfaces are smooth & spring is massless. Sped of gun after ball stops relative to gun is

A

`2m//s`

B

`4m//s`

C

`6m//s`

D

`8m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Moment & energy conservation `6xx20=(24+6)v`
`v=4m//s`
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