PRESSURE

Pressure is defined as the Force acting per unit area of any material

$P=$ Force $\frac{?}{?}$ Area $(\frac{N}{m^2})$

The other units of pressure are:

$\frac{N}{m^2}($or$)$

Pascal $($or$)$

bar $($or$)$

Pounds per square inch $-$ PSI $($or$)$

$k\frac{g}{c}{m}^2($or$)$

mm of Hg $,($or$)$ mm of $H_{2}O$

$1\frac{N}{m^2}=$ Pascal $,\frac{1}{b}ar={10}^5\frac{N}{m^2}=1k\frac{g}{c}{m}^2$

$1$ atmospheric pressure $=\frac{1}{b}ar$ or $0\mathrm{.}1$ MPa or $100$ kPa or $1k\frac{g}{c}{m}^2$ or $14\mathrm{.}7$ psi