what is the difference between stress and pressure?
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Answer Posted / manojsub
I give you a simple example for this, If you blow a balloon
air that is inside. the balloon exerts a force on the
balloon (this force per unit normal area is pressure), Due
to this force an internal reactional or resistant force will
be created (this force per unit normal area is stress).
Pressure is a scalar while stress is a tensor quantity.
COZ, pressure only has magnitude and acts always towards a
surface, and stress could act in either way, and it also
gives the plane, in which it acts (That is why it is a tensor).
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