Hydrostatic Law -- from Eric Weisstein's World of Physics

Fluid Mechanics "> Buoyancy and Hydrostatics v

Hydrostatic Law

Given three "slabs" of material with cross section areas A, consider the force on the central slab due to the pressures from the slabs below and above it,

If the slab has mass m, density , and is acted upon by gravitational acceleration g,

so

This is the hydrostatic law.

Hydrostatic Equilibrium, Law of Atmospheres, Pascal's Principle, Pressure Scale Height