Question

Amachine gun fires 20 bullets of mass 30g in one second with a speed of 400m/s. fthe mass of the gun is 8kg, find the force required to hold the gun in position.[​

Answer 1

Explanation:

Correct option is

B

10N

Mass of the gun =5kg

Mass of bullets =50g

speed at which the bullet is fired=400m/s

Therefore, force required to keep the machine gun in position =timetakenchargeinmomentumofbullets

=60(50×10−3×30)×400=10N

Hence,

option (B) is correct answer