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sindhuja P Grade: 11
        

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

Answers : (1)

Badiuddin askIITians.ismu Expert
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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Badiuddin

7 years ago
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