A dancer is standing on a stool rotating about the vertical axis passing through its centre. She pulls her arms towards the body reducing her moment of inertia by factor of . The new angular speed of turn table is proportional to |
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A dancer is standing on a stool rotating about the vertical axis passing through its centre. She pulls her arms towards the body reducing her moment of inertia by factor of . The new angular speed of turn table is proportional to |
||||||||

a) |
b) |
c) |
d) |

1 Answer

127 votes

Since, no external torque is acting the angular is conserved. constant Where is moment of inertia and the angular velocity. Given, Hence, angular velocity increases by a factor of . |

127 votes

127