Difference between stress and pressure. Mention any two points
Answers
✔Pressure is often used with fluids (gases or liquids), whereas stress is more often used with solids. ✔One major difference is that pressure only acts perpendicular to a surface, whereas stress can also be parallel to a surface as well as perpendicular to it. ... ✔A negative normal stress is called tension.
#STAY BLESSED
#STAY POSITIVE
#BE FOCUSED
Comparison between Pressure and Stress in Physics:
Pressure
Stress
Definition according to Wikipedia
Pressure is the ratio of force to the area over which that force is distributed.
Stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other.
Definition
Pressure is the external force acting over a surface area of a material.
Stress is an internal force acting over a cross sectional area within the material.
Symbol
P or p
P or p
SI unit
Pascal (Pa)
Pascal (Pa)
Formula
P = F / A
P = F / A