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.

Explanation

Here, `m=25g = 25xx10^(-3)kg`
Number of bullets fired//minute `= 600`
Number of bullets fired//sec `(n)= (600)/(60)=10`
`v=200m//s, F=?`
F= rate of change of momentum of bullets
`=nxxmv`
`F=10xx25xx10^(-3)xx200= 50N`.