Question

A gun fires $10$ bullets/sec each of mass $10gm$, with a muzzle velocity of $50m/s$. Find the force required to hold the gun in position.

• A. $5N$
• B. $50N$
• C. $500N$
• D. $5000N$

Answer 1

The correct option is A $5N$

Force required to hold the gun is equal to the reaction force of the bullets coming out of the gun.

$F=\frac{\Delta p}{\Delta t}$

$=\frac{nm(v-u)}{t}=\frac{10\times 10\times {10}^{-3}\times (50-0)}{1}=5N$