Search any question & find its solution
Question:
Answered & Verified by Expert
A machine gun has a mass $5 \mathrm{~kg}$. It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of $400 \mathrm{~ms}^{-1}$. What force is required to keep the gun in position?
Options:
Solution:
2754 Upvotes
Verified Answer
The correct answer is:
$10 \mathrm{~N}$
$$
\begin{aligned}
\text { Force required }=\frac{\text { change in momentum }}{\text { time taken }} \\
=\frac{\left(50 \times 10^{-3} \times 30\right) \times 400-(5 \times 0)}{60}=10 \mathrm{~N}
\end{aligned}
$$
\begin{aligned}
\text { Force required }=\frac{\text { change in momentum }}{\text { time taken }} \\
=\frac{\left(50 \times 10^{-3} \times 30\right) \times 400-(5 \times 0)}{60}=10 \mathrm{~N}
\end{aligned}
$$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.