A machine gun fires n bullets per second...

A machine gun fires n bullets per second each of mass m . If the speed of each bullet is v, then the force of recoil is

mng

mnv

mnvg

`(mnv)/g`

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Verified by Experts

The correct Answer is:

Momentum associasted with each bullet =mv
As n bullets per second are fired, momentum associated with n bullets per second =mvn
`:.` Rate of change of momentum =mvn
= force exerted on the machine gun

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