Question

A machine gun has a mass 5 kg. It fires 50 gram bullets at the
rate of 30 bullets per minute at a speed of 400 ms⁻¹. What
force is required to keep the gun in position?
(a) 10 N (b) 5 N
(c) 15 N (d) 30 N

Answer 1

Answer:

a. 10N is the correct answer

Answer 2

Question:-

A machine gun has a mass 5 kg. It fires 50 gram bullets at the

rate of 30 bullets per minute at a speed of 400 ms⁻¹. What

force is required to keep the gun in position?

(a) 10 N (b) 5 N

(c) 15 N (d) 30 N

${\red{\underline{\underline{\bold{Answer:-}}}}}$

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option (a) 10 N :-

${\green{\underline{\underline{\bold{Explanation:-}}}}}$

• 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 =

charge in momentum of bullet/ time taken= (50×10^-3 ×30)×400/60 =10N

Hence,

option (a) is correct answer.

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