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CBSE Class 9 Answered

A machine gun fires at the rate of n bullet per second, each of mass m with speed v, then the force of recoil is:
Asked by | 13 Mar, 2015, 06:47: PM
answered-by-expert Expert Answer

Hi Tushar,

Change in momentum of 1 bullet = mv

Force of recoil = Rate of change of momentum

n bullets are fired per second

Time for 1 bullet = 1 /n 

begin mathsize 12px style Force space equals space fraction numerator mv over denominator 1 divided by straight n end fraction equals mvn end style 

Answered by | 13 Mar, 2015, 06:56: PM

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