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Question
A machine gun fires A bullet of mass 40 gram with the velocity of 1200m/s. The gun can exert a maximum force of 144N on the bullet. How many bullets can it fire per second at the most?
A machine gun fires A bullet of mass 40 gram with the velocity of 1200m/s. The gun can exert a maximum force of 144N on the bullet. How many bullets can it fire per second at the most?
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Solution
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
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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