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Question: A machine gun has a mass 5 kg. It fires 50 gram bullets at the rate of 30 bullets per minute at a sp...

A machine gun has a mass 5 kg. It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of 400 ms–1. What force is required to keep the gun in position ?

A

10 N

B

5 N

C

15 N

D

30 N

Answer

10 N

Explanation

Solution

F = nmV

= (3060)\left( \frac{30}{60} \right) (50 × 10–3) (400) = 10 N