The axis of rotation of a purely rotating body

On what factors does the kinetic energy of a purely rotating body depend?

On what factors does the kinetic energy of a purely rotating body depend?

What is a rigid body? What is meant by axis of rotation of a rigid body?

Pure Rotation

Show that the moment of inertia of a body about the given axis of rotation is equal to twice the kinetic energy of rotation of the body rotating with unit angular velocity

Statement-1 : Radius of gyration of a body is a constant quantity. Statement-2 : The radius of gyration of a body about an axis of rotation may be defined as the root mean square distance of the particles of the body from the axis of rotation.