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A small ball strikes at one end of a sta...

A small ball strikes at one end of a stationary uniform frictionless rod of mass m and length l which is free to rotate, in gravity-free space. The impact elastic. Instantaneous axis of rotation of the rod will pass through

A

its center of mass

B

the center of mass of rod plus ball.

C

the point of impact of the ball on the rod

D

the point which is at a distance `2l//3` from the striking end.

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The correct Answer is:
D
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