A fly wheel 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 diameters 50 cm, able to rotate about its own axis. Calculate its kinetic energy when rotating at 1200 rpm. Use n =10.Calculate its moment of inertia, in case it is rotated about a tangent in its plane.

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.

When a circular disc of radius 0.5 m is rotating about its own axis then the direction of its angular momentum is

A flywheel rotating about a fixed axis has a kinetic energy of 360 J when its angularspeed is 30 rad/s, then the moment of inertia of fly wheel about the axis of rotation will be

The moment of inertia of a disc about an axis passing through its centre and perpendicular to its plane is 0.4 kg m^2 . Calculate its moment of inertia about tangent parallel to the plane

A flywheel in the form of disc is rotating about an axis passing through its center and perpendicular to its plane looses 100J of energy , when slowing down from 60 r.p.m. to 30 r.p.m. Find its moment of inertia about the same axis and change in its angular momentum.

Kinetic energy of a wheel rotating about its central axis is E. Then kinetic energy of another wheel having twice the moment of inertia and half the angular momentum as that of the first wheel is

The moment of inertia of a disc about an axis passing through its centre and perpendicular to its plane is 0.4 kg m^2 . Calculate its moment of inertia about its diameter

A ring of mass 10 kg and diameter 0.4 m is rotated about an axis passing through its centre and perpendicular to its plane. Moment of inertia of the ring is

A disc of mass 2 kg and diameter 40 cm isfree to rotate about an axis passing through its center and perpendicular to its plane.If a force of 50 N is applied to the disc tangentially its angular acceleration will be