Question

A bullet of mass 40 g fired from a gin of mass 3 kg
acquire a velo of 600 m/sec. the bullet take 0.003 sec to
come across the barrel of gun. Calculate the recoiling velo

of the gun and the length of barrel.​

Answer 1

Answer:

A rifle of mass 3 kg fires a bullet of mass 0.03 kg. The bullet leaves the barrel of the rifle at a velocity of 100 m/s. If the bullet takes 0.003 s to move through its barrel, calculate the force experienced by the rifle due to its recoil. (a) the batsman did not hit the ball enough.

Answer 2

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Let velocity of gun is v.

There is no external force acting, so linear momentum will conserve.

Before the firing, Linear Momentum =0

After the firing, Linear momentum =0.04×400+10×v

⇒0.04×400+10×v=0 ⇒v=−1.6m/s

Hence, 1.6m/s opposite to the direction of the bullet.

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