A flywheel of mass 500 kg and diameter 1m is set in rotation. In 5 seconds it starts rotating at the rate of 20 resolutions per second. Calcualte the torque applied.

A sphere of mass 2 kg and radius 5 cm is rotating at the rate of 300 revolutions per minute. Calculate the torque required to stop it in 6.28 revolutions. [Moment of inertia of sphere about diameter = 2//5 mass xx ("radius")^(2)] .

A ring of mass 100 kg and diameter 2 m is rotating at the rate of (300/(pi)) rpm. Then

If a sphere of mass 2kg and diameter 10cm is rolling at speed of 5ms^(-1). Its rotational kinetic energy is

If a flywheel of mass m kg and radius r m is revolving at n rps, then the kinetic energy of rotation will be

A sphere of mass 5kg and diameter 2 m rotates about a tangent. What is its moment of inertia in kg m^(2) ?

A flywheel of diameter 1 m is rotating at 600 r.p.m., the acceleration of a point on the rim of the fly wheel is

A flywheel of mass 1 metric ton and radius 1 m is rotating at the rate of 420 rpm. Find the constant retarding torque required to stop the wheel in 14 rotations, assuming mass to be concentrated at the rim of the wheel.

A flywheel of mass 8 kg and radius 10 cm rotating with a uniform angular speed of 5 rad / sec about its axis of rotation, is subjected to an accelerating torque of 0.01 Nm for 10 seconds. Calculate the change in its angular momentum and change in its kinetic energy.

The wheel of a car is rotating at the rate of 1200 revolutions per minute. On pressing the accelerator for 10 seconds, it starts rotating at 4500 revolutions per minute. The angular acceleration of the wheel is

A circular ring of diameter 40 cm and mass 1 kg rotating about an axis normal to its plane and passing through the centre with frequency of 10 rotations per second. Calculate the angular momentum about its axis of rotation.