Work, Energy And Power For Rotating Body - Practice Questions & MCQ

Two rotating bodies A and B of masses m and 2m with moments of inertia I_A and  have equal kinetic energy of rotation. If L_A and L_B be their angular momenta respectively, then

A body of radius and mass is initally rolling on a level surface with speed . It then rolls up an inclined to a maximum height . If . The geometrical shape of the body is.
 

A solid sphere is rolling on a surface its speed is and mass . The its kinetic energy is
 

A dog of mass 10kg runs a speed of 5m/sec at surface of a circular drum of radius 1m. The drum can rotate about its own axis AB freely as shown in the figure. The motion of the dog causes the rotation of drum. The speed of rotation is such that relative position of the dog is unaltered. The kinetic energy of rotation of dog is

An object of mass '2kg' is rotating with angular velocity of '1rad/s' about an axis which is '1m' away from the centre of mass. If the radius of gyration of this object is '2m'. Then rotational kinetic energy of the body is given by