A horizontal platform is rotating with uniform angular velocity around the vertical axis passing...

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A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through its centre. At some instant of time a viscous fluid of mass ' \( m \) ' is dropped at the centre and is allowed to spread out and finally fall. The angular velocity during this period
[AIIMS 2005]
(a) Decreases continuously
(b) Decreases initially and increases again
(c) Remains unaltered
(d) Increases continuously
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