A solid ball of volume V is dropped in a viscous liquid. It experiences a viscous force F . If the solid ball of volume 2 V of same material is dropped in the same fluid, then the viscous force acting

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A solid ball of volume V is dropped in a viscous liquid. It experiences a viscous force F . If the solid ball of volume 2 V of same material is dropped in the same fluid, then the viscous force acting on it will be

TestHub · Accepted Answer

Viscous force, F = 6 π ηr v but v ∝ r 2 ∴ F ∝ V ​ (volume) ​ So, on doubling the volume of the ball, the viscous force is doubled.

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