Question

Write a short note on pressure due to a liquid column

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
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Answer 2

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$\underline{\underline{\Huge\blue\mathfrak{Characteristics of Pressure:-}}}$

a). Pressure increases with depth of liquid
b). Liquid exerts lateral pressure.
c). Lateral pressure in a liquid increases with depth.
d). Pressure at any point within a liquid at rest, acts equally in all directions.
e). Pressure of a liquid depends on the density of the liquid.
f). Liquids pressure at uniformly on any areas. liquid pressure at uniformly on any areas.
g). Trust on the base of a vessel containing the liquids depend on the depth and area of the base.
h). When the liquid is at rest, the upward and downward pressure at any point within the liquid are equal.
i). When the liquid is at rest, the upward and downward pressure at any point within the liquid are equal.