A spinning ice skater can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's angular momentum and kinetic energy.

A person is spinning with his hands outstretched at the rate of 3 rad/s.When he brings his hands close to the body,he spins at the rate of 9 rad/s.The ratio of initial rotational kinetic energy to final rotational kinetic energy of the person is

A person is spinning with his hands outstretched at the rate of 3 rad/s.When he brings his hands close to the body,he spins at the rate of 9 rad/s.The ratio of initial rotational kinetic energy to final rotational kinetic energy of the person is

A man spinning in free space can change the moment of inertia of his body (I) by changing its shape. In this process,

A man spinning in free space changes the shape of his body, eg. By spreading his arms or curling up. By doing this, he can change his.

A man spinning in free space changes the shape of his body, eg. By spreading his arms or curling up. By doing this, he can change his.

A man spinning in free space can change the moment of inrtia of his body (I) by charging its shape. In this process,

A man is spinning in the gravity free - space changes the shape of the body by spreading his arms. By doing this he can change his (a) moment of inertia (b) angular momentum (c ) angulat velocity (d) rotational kinetic energy Which one of the following are correct ?