Question

If $n$ bullets each of mass $m$ are fixed with a velocity $v$ per second from a machine gun, the force required to hold the gun in position is

• A. $(n+1)mv$
• B. $\frac{mv}{n^2}$
• C. $\frac{mv}{n}$
• D. $n^{2}mv$
• E. $mnv$

Answer 1

The correct option is E $mnv$

Given, Mass of bullet $=m$,
Velocity of bullet $=v$
Number of bullet $=n$,
We know that, force required to hold the gun in position i.e.
$F=\frac{△P}{△t}=n\left(mv\right)=mnv$.