Pressure is define as force per unit area.
Pressure is very similar to Force, but applies force over a particular area.
The units of this equation will be:
For comparison, 1 atmosphere (using Earth’s atmosphere at sea-level as a standard is:
14.7 lbs/in2 = 100 kPa = 1 bar = 760 mm Hg = 29.92 inches Hg
The pressure acting on a surface depends on ..
(a) the force acting on the object.
(b) The area on which the force is acting