1.

A uniform rod of mass m is initially rotated about a vertical axis passing through its C.M. such that speed of both ends is v in opposite direction and placed gently on a rough horizontal surface. If coefficient of friction between rod and surface is u then rate of loss of kinetic energy just after the rod placed on surface is -(1) μmgev(2) μmgy(3) μmg(4) 2μmg

Answer»

The correct option is (3) μmg.

Given:

Block of mass is 'm'

Coefficient of friction ' μ'

We have to apply a force that is just greater than static friction force on a body.

So the required force is F = μ.N

= μ mg.



Discussion

No Comment Found

Related InterviewSolutions