6 bullets are fired in a second from a m...

6 bullets are fired in a second from a machine gun with velocity of 400 `ms^(-1)`. The mass of machine gun and bullet are 10 kg and 30g respectively. What is the value of force is to be exerted on machine gun to keep it stationary ?

72 N

7200 N

12N

Text Solution

Verified by Experts

The correct Answer is:

Force is to be exerted on machine gum change in momentum of bullets
`=nmv`
`=(6 ) (30 xx 10^(-3)) (400)`
`=72 N`

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