Question

what is a viscous force?
explain ​

Answer 1

Answer:

Viscous force: It is the resistance (internal) force provided by a fluid when it is subjected to tangential force on its surface (shear). ... As a result, the fluid's relative velocity about the surface is zero. In other words, the fluid molecules at the surface have the same velocity as the surface.

Answer 2

Explanation:

A measure of a fluid's resistance to flow. Viscous forces in a fluid are proportional to the rate at which the fluid velocity is changing in space; the proportionality constant is the viscosity.