JEE Main Physics question
A gun of mass 10 kg fires 4 bullets per second. The mass of each bullet is 20 g, and the velocity of the bullet when it leaves the gun is 300 ms⁻¹. The force required to hold the gun while firing is
Answer: (C)
Solution
Force = (rate of firing) × (mass × velocity per bullet) = 4 × 0.02 × 300 = 24 N.