Our brave helicopter pilot has flown into battle to engage the alien invaders fr

Question

Our brave helicopter pilot has flown into battle to engage the alien invaders from another planet. The Gregorian used their mind ray and downed his helicopter. Relentless in his defense of the planet, our brave hero rips the chain gun from the side of the helicopter and proceeds to mow down the enemy. Pulling the trigger, he released a wall of steel mowing down the Gregorians. His gun fires 1500 rounds a minute. Each round weighs .22 lbs and leaves the gun at 3200 ft/s. This advanced gun discharges no belt components or shell casings. It uses them for propellant on the next round. Determine the average force with which our hero must brace himself to keep from falling over backwards

Explanation / Answer

Here ,

number of rounds , N = 1500

mas of each round , m = 0.22 lbs

m = 0.22 * 0.454 Kg

m = 0.0999 Kg

speed , v = 3200 ft/s = 976.4 m/s

Now ,

force extered by gun = m * N * v

force extered by gun = 1500 * 0.0999 * 976.4

force extered by gun = 146313 N

the average force with which our hero must brace is 146313 N

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