For solids with an elastic modulus of rigidity, the shearing force is proportional to the shear stra

Question

For solids with an elastic modulus of rigidity, the shearing force is proportional to the shear strain. For fluids, the viscous force (shearing force) is proportional to:

Professor PC Thomas Classes · Answer

A fluid yields continuously to shear stress. The viscous force (shearing force) in a fluid is proportional to the velocity gradient, which represents the rate of shear strain.