A flywheel of mass 4 kg has radius of gyration 0.4 m. Calculate the kinetic energy of rotation when it makes 5 r.p.s

A wheel of mass 40 kg and radius, of gyration 0.5m comes to rest from a speed of 180 revolutions per minute in 3 s. Assuming that the retardation is uniform, then the value of retarding torque tau in Nm is

A fly wheel is in the form of solid circular wheel of mass 72 kg and radius of 0.5 m and it makes 70 rpm, then the energy of revolution is

A small cyclotron of maximum radius 0.5 m accelerates protons in a 1.7 T magnetic field. Calculate the kinetic energy (maximum) of protons when they leave the cyclotron.

If a wheel has mass 70 kg and radius of gyration 1 m, then the torque required for an angular acceleration of 2 rev/s^2 will be

A flywheel is a mechanical device specifically designed to efficiently store rotational energy. For a particular machine it is in the form of a uniform 20 kg disc of diameter 50 cm, able to rotate about its own axis. Calculate its kinetic energy when rotating at 1200 rpm. Use pi^2 = 10 . Calculate its moment of inertia , in case it is rotated about a tangent in its plane.

A body of mass 2kg and radius of gyration 0.5 m is rotating about an axis. If its angular speed is 2 rad/s, then the angular momentum of the body will be

A body of mass 2 kg moves with a velocity of 5 m/s. Find its kinetic energy.

A torque of 400 Nm acting on a body of mass 40 kg produces an angular acceleration of 20 rad/s^2 . Calculate the moment of inertia and radius of gyration of the body.

8 kg wheel has radius of gyration (1/4) m. The torque required to give it an angular acceleration of 4 rad/s^2 , is