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anonymous
 4 years ago
A machine gun fires 25 g bullets at the rate of 600 bullets per minute with a speed of 200 m/s. Calculate the force required to keep the gun in position.
anonymous
 4 years ago
A machine gun fires 25 g bullets at the rate of 600 bullets per minute with a speed of 200 m/s. Calculate the force required to keep the gun in position.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0600 bullets per minute = 600/60 = 10 bullets per second F = n * m * v = 10 * 200 * 25 * 10^3 = 2N

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0But force is rate of change of momentum right?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0He gave you in fact Change of momentum/ per 1 sec

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0My calcu was wrong..))

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I didn't get you @Mikael.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0See he calculated for U how much Momentum is given to ALL the bullets flyingout in the period of 1 second . IT IS the change in momentum of the gun too  with a minus sign of course

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1346144826007:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0impulse is the variation of momentum

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[ ♬ \ Jack \ of \ Oz \ ♬ \ [your \ turn] \]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0If the slowest rate of acceleration of a bullet is 0.1 seconds, then 0.025 x (200/0.1) [F = ma] = 50 N. So that would be the force from each fired bullet. We get the 0.1 second as the gun fires 10 rounds per second.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0force exerted by each bullet is impulsive therefore...force exerted by each bullet is 5 N that is the force which should be maintained to keep gun stationary
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