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1. |
A horizontal platform is rotating with a uniform angular velocity around the vertical axis passing through its centre. At some instant a viscous fluid of mass m is dropped at the centre and is allowed to spread out and finally fall out. The angular velocity during the period |
A. | decreases continuously |
B. | decreases initially and increases again |
C. | increases continuously |
D. | increases initially and decreases again |
Answer» C. increases continuously | |