Derivation Formulas

Q1

What is Stoke’s Law?

Stoke’s Law is an equation that expresses the drag force resisting the fall of small spherical particles through a fluid medium.

Q2

What does the Stoke’s Law state?

Stoke’s Law states that the force that retards a sphere moving through a viscous fluid is directly proportional to the velocity and the radius of the sphere, and the viscosity of the fluid.

Q3

When do we use Stoke’s Law?

We use Stoke’s law to determine the terminal velocity, the size and the density of sphere and liquid, respectively. Stoke’s law can also be used to calculate the viscosity of the fluid.

Q4

When is Stoke’s Law valid?

Stoke’s Law is valid for determining viscosity when velocity is constant.

Q5

What are the applications of Stoke’s Law?

Settling of sediment in freshwater and measurement of the viscosity of fluids are some of the applications of Stoke’s Law.