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
mω2R2C.
mω2L2
mω2L2D.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.
=
I - MI of rod about axis passing through centre of disc & perpendicular to the plane.
Create a free account to view solution
View Solution FreeMore Rotational Motion Questions
A rod is hinged at its centre and rotated by applying a constant torque starting from rest. The power developed by the e...Consider a thin uniform square sheet made of a right material . If its side is ′a′, mass m and moment of ine...The M.I. of a thin rod of length l about the perpendicular axis through its centre is I. The M.I. of the square structur...The figure shows a system consisting of (i) a ring of outer radius 3R rolling clockwise without slipping on a horizontal...A cube of mass M and edge a is released from rest with its corner C vertically above A. It rotates about A until its cor...