Let us consider a fluid is at rest and this fluid puts pressure at a point O of small area dA. If the force acted on O is dF, then pressure can be given by-

Pressure, P = dF/ dA

Or,

P = F/ A (Suppose force is acted uniformly on the area A)

**Unit of Pressure:**

P = N/ m^{2}

= Pascal (Pa)

1 bar = 10^{5} Pa or 10^{5} N/m^{2}

**Links of Previous Main Topic:-**

- Introduction about air standard cycles
- Properties of pure substances introduction
- Vapour compression refrigeration cycle introduction
- Basic fluid mechanics and properties of fluids introduction
- Fluid statics introduction
- Fluid pressure at a point

**Links of Next Mechanical Engineering Topics:-**