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Derive an expression for the pressure ex...

Derive an expression for the pressure exerted by a liquid column.

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Consider a liquid column of height h and area of cross-section A. Let p be the density of liquid.
Force on area, A = Weight of liquid in the column
or F = mass of liquid in the column `xxg`
or F = volume `xx` density `xxg` or `F=Ahxxrhoxxg`
or `F=Ahrhog`
Pressure exerted by liquid at depth h is given by :
`P=(F)/(A)=(Ahrhog)/(A)=hrhog.`
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