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`        A machine gun has a mass of 200 Kg. It fires 35 gm bullets at the rate of 40 bullets per second with a speed of 400 m/s.The force needed to keep the gun fixed is_____________________`
7 years ago

147 Points
```										Dear sindhuja
conser the liner momentum
200*0 + 35/1000 *0  =200 *v  +35/1000  *400
v=-57.142 m/sec
we know that F=rate of change of linear momentum
=(0-(-200*57.142))/(1/40)
F= 457136 N
=45.7kN

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7 years ago
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