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A uniform rod of mass m , length l movin...

A uniform rod of mass m , length l moving with a velocity v ( perpendicular to its length ) on a smooth horizontal plane, encounters a fixed peg P at a distance l/4 from its nearer end. The rod collides with the peg. The duration of impact `Delta t` is very small. The average force exerted by the peg on the rod during the impact is of magnitude.

A

`(4mv)/(7 Deltat)`

B

`(4mv)/(5 Deltat)`

C

`(12mv)/(7 Deltat)`

D

`(12mv)/(5 Deltat)`

Text Solution

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The correct Answer is:
A
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