
A uniform disc of mass and radius is rotating about its centre of mass (the centre of mass is at rest) with an angular speed The angular momentum of disc about a point (as shown) will be




Important Questions on Rigid Body Dynamics
A uniform disc of mass and radius is undergoing fixed axis rotation about its own axis and centre of disc remains stationary. The angular speed of disc is Then the magnitude of angular momentum of disc about shown point is:


A uniform circular disc placed on a horizontal rough surface has initially a velocity and an angular velocity as shown in the figure. The disc comes to rest after moving some distance in the direction of motion. Then is

An impulsive force acts horizontally on a solid sphere of radius placed on a horizontal surface. The line of action of the impulsive force is at a height above the centre of the sphere. If the rotational and translational kinetic energies of the sphere just after the impulse are equal, then is equal to:

A solid sphere of mass and radius is gently placed on a conveyer belt moving with constant velocity If the coefficient of friction between the belt and sphere is the distance travelled by the centre of the sphere before it starts pure rolling is-

A non-uniform sphere at rest on a rough horizontal surface is acted upon by a force as shown. The friction force acting on it is
(1) towards left
(2) towards right
(3) zero Then possible option is

A horizontal force is applied to the lower end of a uniform thin rod of mass and length as shown in the figure. The rod undergoes only translational motion along the smooth horizontal surface. If determine the angle for translation motion of the rod.


A uniform solid cylinder is given an angular speed and placed on a rough plate of negligible thickness. The horizontal surface below the plate is smooth. Then the angular speed of the cylinder when it starts pure rolling on the plate will be: [Assume sufficient length of plate]
