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Instantaneous Force and Impulse

A gun fires 1...

Question

A gun fires $10$ bullets/sec each of mass $10 g m$ , with a muzzle velocity of $50 m / s$ . Find the force required to hold the gun in position.

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Solution

Force required to hold the gun is equal to the reaction force of the bullets coming out of the gun.

$F = \frac{Δ p}{Δ t}$

$= \frac{n m (v - u)}{t} = \frac{10 \times 10 \times 10^{- 3} \times (50 - 0)}{1} = 5 N$

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