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Spherical balls of radius R are falling in a viscous fluid of viscosity Ƞ with a velocity v. The retarding viscous force acting on the spherical ball is ___________

Spherical balls of radius R are falling in a viscous fluid of viscosity Ƞ with a velocity v. The retarding viscous force acting on the spherical ball is ___________ Correct Answer Directly proportional to both radius R and velocity v

F = 6πȠRv, which is retarding viscous force is directly proportional to both R and v.

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