Question

write a shory note on pressure due to a liquid colum

Answer 1

Pressure due to a liquid column

Let h be the height of the liquid column in a cylinder of cross sectional area A. If ρ is the density of the liquid, then weight of the liquid column W is given by

W = mass of liquid column � g = Ahρg

By definition, pressure is the force acting per unit area

∴ Pressure =  weight of liquid column / area of cross section

= Ah g / A

= hρg