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A machine gun fires 25g bullet at the ra...

A machine gun fires `25g` bullet at the rate of 600 bullets per minutes with a speed of `200m//s`. Calculate the force required to keep the gun in position.

Text Solution

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Here mass of each bullet
`m=25g =25/1000 kg=1/4 kg`
Number of the bullets fired/minute=600
Number of bullets fired/second i.e.,
`n=600/60 =10`
Speed of a bullet `v=20m//s`
Force required F=?
F=rate of change of momentum of bullets
=momentum of bullets fired/second
`=m times n times v`
`=1/40 times 10 times 200=50 N`
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