A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s . The man holding it can exert a maximum force of 144 N on the gun. How many bullet - Physics MCQ AIEEE 2004 2026 | ExamTest.live

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A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s . 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?

Solution & Step-by-step Explanation

Force exerted is equal to the rate of change of momentum.Let n be the number of bullets fired per second. F = n \cdot Δ p = n \cdot m v Given m = 40 g = 0.04 kg, v = 1200 m/s, and F_{ma x} = 144 N : 144 = n \cdot 0.04 \cdot 1200 144 = n \cdot 48 n = \frac{144}{48} = 3 The maximum number of bullets is 3 .

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A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s . 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?

One

Four

Two

Three

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