PRESSURE
DEFINITION
- It is the force applied perpendicularly to the surface of an objects per unit area over which that force is disturbed .
- Various units are used to excess pressure.
- SI unit of pressure is pascal
- Pressure may be expressed in terms of standard atmospheric pressure. The atmosphere is equal to the pressure.
P = F/A
Where p is pressure
f is force
a is area
Pressure is a scalar quantity.
UNITS
- The SI unit of pressure is pascal, equal to one newton per square meter.
- The CGS unit of pressure is BARYE(ba), equal to 0.1 pa
- Sometimes pressure express in gram force or kilogram.
EXAMPLES
- A finger can be pressed against the wall without making any lasting impression.
- Pressure is transmitted to solar boundaries of fluid normal to these boundaries or section at every point.


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