A body rotating at a steady rate, does torque acts on the body?

A body of mass 'm' and radius of gyration 'K' is rotating with angular acceleration alpha . Then, the torque acting on the body is:

A body of mass 'm' and radius of gyration 'K' is rotating with angular acceleration a. Then the torque acting on the body is

A force oversetrarrF =(4hati + 2hatj -hatk) N acts on a body at a distance of oversetrarrr = (-hati-3hatj + hatk) m from the origin of an inertial reference frame. Find the torque acting on the body.

In doubling the mass and acceleration of the body, the force acting on the body with respect to the previous value

Compare the rate of emission of heat by a black body at 327^@C with the rate of emission of heat of same body at 27^@C .

A solid sphere of mass 2 kg and radius 5 cm is rotating at the rate of 300 rpm. The torque required to stop it in 2pi revolutions is

If a body starts rotating from rest due to a torque of 1.5 Nm, thenits kinetic energy afterit completes 20 revolutions will be

Answer the following : What is buoyant force ? How does it act on a body which is immersed in a liquid ?