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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > viscous liquid of viscosity n is filled between an outer fixed cylinder as shown in the figure. the central sollid cylinder starts with angular velocity v0. find out the time after which the angular velocity becomes half.

viscous liquid of viscosity n is filled between an outer fixed cylinder as shown in the figure. the central sollid cylinder starts with angular velocity v0. find out the time after which the angular velocity becomes half.

A sphere is dropped under gravity through a fluid of viscosity η . Taking the average ac celeration as half of the initial ac celeration show that the time to attain the terminal velocity is independent of the fluid density.