Question

a machine gun fires A bullet of mass 40 grams with a velocity 200 m per second the man holding it can exert a maximum force of 144 N on the gun how many bullets can he fire per second at the most?

Answer 1

Mass of each bullet = 40 g = .040 kg

Velocity of each bullet = 1200 m/s

Let 'n' be the number of bullets fired per second. Then, change in momentum of the bullets coming out per second is,

= force on the man

=> n (0.040)(1200) = 144

=> n = 3

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