A flywheel rotating about an axis passing through its centre and at right angles to its plane losses 10 J of energy, when slowing down from 60 r.p.m. to 30 r.p.m. Find its M.I about the same axis. What is the change in its angular momentum ?

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.

M.I.of a uniform disc about an axis passing through its centre and perpendicular to its plane is 10 kg m^2 .Find its M.I. about the diameter.

The M.I. of a disc about an axis passing through its centre and perpendicular to its plane is 10 kgm^2 , Determine its M.I. about a parallel axis: tangential to its rim and

The M.I. of a disc about an axis passing through its centre and perpendicular to its plane is 10 kgm^2 ,Determine its M.I. about a parallel axis: Passing through a point midway between the centre and the rim.

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

Fill in the blanks : Our galaxy is rotating around an axis passing through its centre and perpendicular to its plane with period of rotation about ………….

A cylinder of 500 g and radius 10 cm has moment, of inertia about an axis passing through its centre and parallel to its length as

The moment of inertia of a disc about an axis passing through its centre and perpendicular to its plane is 20 kg m^2 . Determine its moment of inertia about an axis coinciding with a tangent perpendicular to its plane

A disc of radius 10 cm can rotate about an axis passing through its centre and perpendicular to its plane. A force of 10 N is applied along the tangent in the plane of the disc. If the moment of inertia of the disc about its centre is 5 kg m2, then the increase in the angular velocity of the disc in 10 s will be

A disc of mass 2 kg and radius 0.2 m is rotating about an axis passing through its centre and perpendicular to its plane with an angular velocity 50 rad/s. Another disc of mass 4 kg and radius 0.1m rotates about an axis passing through its centre and perpendicular to its plane with angular velocity 100 rad/s. If the two discs are coaxially coupled, then the angular velocity of the coupled system would be