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A gun of mass M at rest on a smooth surf...

A gun of mass M at rest on a smooth surface fires a shell of mass m. the ratio of kinetic energy of the shell and gun after firing is :: (Assume that shell is fired horizontally).

A

m/M

B

`M^(2)//m^(2)`

C

`m^(2)//M^(2)`

D

M/m

Text Solution

Verified by Experts

The correct Answer is:
4
`k=p^(2)//(2m) rArr (k_(s))/(k_(g))=(m_(g))/(m_(s)) =M/m`
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