A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. `I, omega, L, E` are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

Options

A. I increases and `omega ` , E decrease but L is constant
B. I decreases , `omega ` and E increase but L is constant
C. I increases , `omega ` decreases , L and E are constant
D. I increases , `omega ` increases but L and E are constant

Answer

A