Question

State Stoke's Law and deduce the expression for initial acceleration for a small, smooth sphere falling in a viscous liquid.

Answer 1

Answer:

The force of viscosity on a small sphere moving through a viscous fluid is given by: ... Fd is the frictional force – known as Stokes' drag – acting on the interface between the fluid and the particle. μ is the dynamic viscosity (some authors use the symbol η) R is the radius of the spherical object.