Question

why kinitical energy is 2D?(the formula include v(center of gravity velocity and moment of mass inertia)

Answer 1

Answer:

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.