The axis X and Z in the plane of a disc are mutually perpendicular and Y-axis is perpendicular to the plane of the disc. If the moment of inertia of the body about X and Y axes is respectively 30 kg `m^(2)` and 40 kg `m^(2)` then M.I. about Z-axis in kg `m^(2)` will be:

A uniform disc of mass 2kg is rotated about an axis perpendicular to the plane of the disc . If radius of gyration is 50cm, then the M.I. of disc about same axis is

A uniform disc of mass 2 kg is rotated about an axis perpendicular to the plane of the disc. If radius gyration is 50 cm, then the M.I. of the disc about same axis is

If the moment of inertia of a ring about transverse axis passing through its centre is 6 kg m^(2) , then the M.I. about a tangent in its plane will be

If the moment of inertia of a ring about transverse axis passing through its centre is 6 kg m^2 , then the M.I. about a tangent in its plane will be

The moment of inertia of a uniform semicircular disc of mass M and radius r about a line perpendicular to the plane of the disc through the center is

The moment of inertia of a circular disc about an axis passing through the circumstances perpendicular to the plane of the disc is

The moment of inertia of a circular disc about an axis passing through its centre and perpendicular to the plane is 4 kg m^(2) . Its moment of inertia about the diameter is

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 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 m^(2) , then the increase in the angular velocity of the disc in 10 s will be