What is the difference between stress and pressure?
Stress- It is defined as the external(deforming) force applied per unit area acting perpendicularly to the surface of the area.
Mathematically,
Pressure = ( Deforming(external)Force)/(Area)
Stress on a body is used to deform it.
Pressure is defined as the force per unit area acting perpendicularly to the surface of the area. Mathematically,
Pressure = Force/Area