Question

A machine gun fires `25g` bullets at the rate 600 bullets per minute with a speed of `400m//s`. Calculate the force required to keep the gun position

Answer 1

Here, `m=25 g = 25xx10^(-3) kg , n=(600)/(60)= 10` bullet/sec, `v=400m//s, F=?`
F= rate of chang e of momentum of bullets = n m v `= 10xx25xx10^(-3)xx400=100N`