Question

What is the relation between angular momentum and rotational kinetic energy

Answer 1

Image result for What is the relation between angular momentum and rotational kinetic energy .When an object is rotating about its center of mass, its rotational kinetic energy is K = ½Iω2. Rotational kinetic energy = ½ moment of inertia * (angular speed)2. When the angular velocity of a spinning wheel doubles, its kinetic energy increases by a factor of four.

Answer 2

as  momentum acts linear and position vector from the center  both together in a product gives angular momentum