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A gun of mass M fires a bullet of mass m with a horizontal speed V. The gun is fitted with a concave mirror

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asked Mar 31, 2018 in Physics by Nisa (2,540 points) ● 1 ● 12

A gun of mass M fires a bullet of mass m with a horizontal speed V. The gun is fitted with a concave mirror of focal length f facing towards the receding bullet. Find the speed of separation of the bullet and the image just after the gun was fired.

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answered Mar 31, 2018 by rubby (7,550 points) ● 1 ● 3 ● 5

Recoil velocity of gun = Vg =mV/M.

At any time ‘t’, position of the bullet w.r.t. mirror

Since, the mirror itself is moving at a speed of mV/M and the object is moving at ‘V’, the velocity of separation between the image and object at any time ‘t’ will be,

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