A machine gun fires a bullet of mass 40 g with a velocity 1200 m s - 1 . The man holding it can exert a…

A machine gun fires a bullet of mass 40 g with a velocity 1200 m s-1. The man holding it can exert a maximum force of 144 N on the gun. The maximum number of bullets that the man can fire per second is

Solution

Suppose he can fire n bullets per second

∴  Force = Change in momentum per second

144=n⁡×(401000)×(1200)

n⁡=144×100040×1200 

n⁡=3

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