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A ballet dancer is rotating about his ow...

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

A

`I` increases and `omega,E` decrease but `L` is constant

B

`I` decreases, `omega` and `E` increases but `L` is constant

C

`I` increase, `omega` decreases, `L` and `E` are constant

D

`I` increases, `omega` increases but `L` and `E` are constant

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The correct Answer is:
A
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