Stoke's Law hold good for the:
* Bodies of all shapes
* Motion through a vacuum
Motion through viscous medium
* Motion through non-viscous medium
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STOKE'S LAW - DEFINITION
When any object rises or falls through a fluid it will experience a viscous drag (frictional force) due to the fluid. This object can be skydiver falling through air, a stone falling through water or a bubble rising through water.
Statement of Stoke's law: Stokes law states that the force of viscosity on a small sphere moving through a viscous fluid is given by:
F=6πμrv
Where,
F is the frictional force acting on the interface between the fluid and the particle.
μ is the dynamic viscosity
R is the radius of the spherical object
V is the flow velocity relative to the object
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motion through viscous medium
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