A machine gun of mass 10 kg fires 20 g bullets at the rate of 180 bullets per minute with a speed of 100 m s -1 each. The recoil velocity of the gun is

Question

A machine gun of mass 10 kg fires 20 g bullets at the rate of 180 bullets per minute with a speed of 100 m s -1 each. The recoil velocity of the gun is (A) 0.6 m / s (B) 2.5 m / s (C) 1.5 m / s (D) 0.02 m / s

Tardigrade Admin · Accepted Answer

20 × 10-3 × (180/60) × 100=10 V ⇒ v =0.6 m / s

Q. A machine gun of mass $10 k g$ fires $20 g$ bullets at the rate of $180$ bullets per minute with a speed of $100 m s^{- 1}$ each. The recoil velocity of the gun is

$0.6 m / s$

$2.5 m / s$

$1.5 m / s$

$0.02 m / s$

$20 \times 1 0^{- 3} \times \frac{180}{60} \times 100 = 10 V$
$\Rightarrow v = 0.6 m / s$

Q. A machine gun of mass 10kg fires 20g bullets at the rate of 180 bullets per minute with a speed of 100ms−1 each. The recoil velocity of the gun is

0.6m/s

2.5m/s

1.5m/s

0.02m/s