The restoring force per unit area developed due to the applied tangential force is called shearing stress or tangential stress.
Shearing stress:
1. When a deforming force acting on a body produces change in the shape of a body shearing stress is produced.
2. Consider ABCD as a front face of a cube, a tangential force is applied to the cube so that the bottom of the cube is fixed and only the top surface is slightly displaced.
