Stoke's Formula

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Stoke's formula determines the force resulting from the viscosity of a liquid acting on a smooth sphere with stream line motion. Stoke's formula is expressed as 

F = 6 π η r v     (1)

where 

F = force (N)

η = viscosity of fluid

r = radius of sphere (m)

v= relative velocity between fluid and sphere (m/s)

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Related Topics

• Fluid Mechanics - The study of fluids - liquids and gases. Involves various properties of the fluid, such as velocity, pressure, density and temperature, as functions of space and time.

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