From an automatic gun a man fires $ 360$ bullet per minute with a speed of $360 km/hour$. If each weight $ 20 g, $ the power of the gun is......$W$
From an automatic gun a man fires $ 360$ bullet per minute with a speed of $360 km/hour$. If each weight $ 20 g, $ the power of the gun is......$W$
$600$
$300$
$150$
$75$
From an automatic gun a man fires $ 360$ bullet per minute with a speed of $360 km/hour$. If each weight $ 20 g, $ the power of the gun is......$W$
Power of gun $ = \frac{{{\rm{Total K}}{\rm{.E}}{\rm{. of fired bullet}}}}{{{\rm{time}}}}$
$ = \frac{{n \times \frac{1}{2}m{v^2}}}{t} = \frac{{360}}{{60}} \times \frac{1}{2} \times 2 \times {10^{ - 2}} \times {(100)^2} = 600\,W$