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 adistance l/4 from its nearer end. The rod collides with the peg. Theduration of impact Delta t is very small. The average force exerted by the peg on the rod during the impact is of magnitude.

A uniform rod of mass m , length l moving with a velocity v ( perpendi

1.	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 adistance l/4 from its nearer end. The rod collides with the peg. Theduration of impact Delta t is very small. The average force exerted by the peg on the rod during the impact is of magnitude.
Answer» `(4mv)/(7 DELTAT)` `(4mv)/(5 Deltat)` `(12mv)/(7 Deltat)` `(12mv)/(5 Deltat)` ANSWER :A