A ball rolls without slipping. The raidus of gyration of the ball about an axis passing through its centre of mass is K. If the raidus of ball be R, then the fraction of total […]
Mass and diameter of a ring is 2 kg and 1 m respectively. The moment of inertia of ring about an axis is passing through its C.M. and perpendicular to the plane of the ring […]
A thin rod of length L and mass M is held vertically with one end on the floor and is allowed to fall. Find the velocity of other end when it hits the floor, assuming […]
Angular momentum of the particle rotating with a central force is constant due to
Options
(a) Constant torque (b) Constant force (c) Constant linear momentum (d) Zero torque
Correct Answer:
Zero torque
Explanation: […]
The moment of inertia of a uniform circular disc of radius R and mass M about an axis touching the disc at its diameter and normal to the disc
Options
(a) 1/2 MR² […]
Two solid discs of radii r and 2r roll from the top of an inclined plane without slipping. Then
Options
(a) The bigger disc will reach the horizontal level first (b) The smaller […]
A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum acceleration down the plane is for (no rolling) […]
Two discs of moment of inertia I₁ and I₂ and angular speeds ?￢ﾂﾁ and ?￢ﾂﾂ are rotating along collinear axes passing through their centre of mass and perpendicular to their plane. If the two are […]
A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°. The increase in its potential energy is
Options
(a) 2 J (b) 3 J (c) […]
Two rigid bodies A and B rotate with rotational kinetic energies Eᴀ and Eʙ respectively. The moments of inertia of A and B about the axis of rotation are Iᴀ and Iʙ respectively. If Iᴀ […]
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