Rotational MotionHard

Question

A uniform rod of mass M and length L lies radially on a disc rotating with angular speed ω in a horizontal plane about its axis. The rod does not slip on the disc and the centre of the rod is at a distance R from the centre of the disc. Then the kinetic energy of the rod is -
                                                   

Options

A.
B.mω2R2
C.mω2L2
D.None of these

Solution

As rod does not slip on the disc, so the kinetic energy of the rod is
=
I - MI of rod about axis passing through centre of disc & perpendicular to the plane.

Create a free account to view solution

View Solution Free
Topic: Rotational Motion·Practice all Rotational Motion questions

More Rotational Motion Questions

Two gear wheels which are meshed together have radii of 0.50 cm and 0.15 cm. The number of revolutions does the smaller ...Let be the force acting on a particle having position vector and be the torque of thisforce about the origin. Then...The moment of inertia of a ring of mass M and radius R about PQ axis will be :-...A diver before he plungs into water, contracts his body, there by :-...A wheel of radius 20 cm has force applied to it as shown in the fig. The torque produced by the forces 4N at A, 8N at B,...