What is torque due to gravity about an axis passing through C.M.?

Torques of equal magnitude are applied to a hollow cylinder and a solid sphere, both having the same mass and radius. Hie cylinder is free to rotate about its standard axis of symmetry, and the sphere is free to rotate about an axis passing through its centre. Which of the two will acquire a greater angular speed after a given time.

Moment of a solid cylinder about its axis of symmetry is equal to moment of inertia about an axis passing through its centre and perpendicular to its length.Show that L//r = sqrt3 .

Find the moment of inertia of a thin circular ring about an axis passing through the centre and perpendicular to the plane of the ring

Derive the expression for moment of inertia of a circular disc about an axis passing through its centre and perpendicular to its plane

Three thin metal rods,each of mas M and length dL,are welded to form an equilateral triangle.The moment of inertia of the composite structure about an axis passing through the centre of mas of the structure and perpendicualr to its plane is :

A thin circular ring od fiameter 15 cm has a mass of 100g.Find its moment of inertia about an axis passing through its centre and perpendicular to its plane.

Two spheres each of mass M and radius R//2 are connected with a massless rod of lenth 2R as shown in fig.What will be the oment of inertia of the system about an axis passing through the centre of one of the spheres and prependicular to the rod?

Find the expression for moment of inertia of a thin uniform rod about an axis passing through its centre and perpendicular to its length

Why is it easier to rotate a disc than a ring of the same mass and size, about an axis passing through their centres?