Question

Derive an expression for the height h to which a liquid of density ρ and surface tension T will rise in a capillary tube of radius r given the acceleration due to gravity is g and h ∝ 1/r

Answer 1

Explanation:

Surface tension is the contact force per unit length along the circumference of top surface. This force pulls the liquid vertically upwards. => h = 4 S CosФ / (ρ D g)