AIIMS2005Physics-Mechanics
AIIMS 2005 Physics Rotational Dynamics MCQ Question
Type: MCQ-conceptual-Medium-Class 11
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
A
decreases continuously
B
decreases initially and increases again
C
remains unaltered
D
increases continuously
Correct Answer
Option B
Detailed Explanation
According to law of conservation of momentum, I₀ω = constant.
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