AIIMS 2005 Physics Rotational Dynamics MCQ Question
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
decreases continuously
decreases initially and increases again
remains unaltered
increases continuously
Correct Answer
Detailed Explanation
According to law of conservation of momentum, I₀ω = constant.
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