13.  Stokes' Law is a formula for determining the rate of sedimentation. It states that a particle moving through viscous liquid attains a constant velocity or sedimentation rate.

What law is the sedimentation test based on?

The amounts of silt and clay (+/- sand) are usually determined by a sedimentation procedure, which uses a basic principle of sedimentation called "Stoke's Law": because soil particles are denser than water, they tend to sink, settling at a velocity that is proportional to their size.

What is Isstokes law?

Stokes' law is a law in physics that states that the force that resists a sphere's fall in a viscous fluid is directly proportional to the velocity of the sphere, the radius of the sphere, and the viscosity of the fluid. ... r is the radius of the sphere.