Conditions under which Stoke's law is valid are:
The fluid through which the body moves must have infinite extension. The body is perfectly rigid and smooth. There is no slip between the body and the fluid. The motion of the body does not give rise to turbulent motion.
When can you use Stokes law?
Stokes' law is the basis of the falling-sphere viscometer, in which the fluid is stationary in a vertical glass tube. ... Knowing the terminal velocity, the size and density of the sphere, and the density of the liquid, Stokes' law can be used to calculate the viscosity of the fluid.
What is Stoke's law and when is it valid?
Stokes' Law is valid for determining viscosity when velocity is constant. When a sphere reaches its terminal velocity, the force of friction equals...
