Two vessels have

Given,

Two vessels are having same base area.

Two vessels are filled with water.

We have,

Pressure, P = ρgh

Where,

ρ = density

g = acceleration due to gravity

h = height of the column

Thus, for given two vessels pressure only depends on height of the water column only.

Force at the base,

Hence, Force exerted on the base of two vessels is same.

Weight = mg

Where,

m = mass

g = acceleration due to gravity

Different volumes of two vessels have different mass. So, on weighing scale they show different readings.