We examine energy variations in static fluids, focusing on pressure and gravitational potential energy density. Pressure in a fluid, seen as energy density, increases with depth as gravitational poten...We examine energy variations in static fluids, focusing on pressure and gravitational potential energy density. Pressure in a fluid, seen as energy density, increases with depth as gravitational potential energy decreases. This balance explains why pressure at equal heights remains constant, forming the basis of Pascal’s Principle. Applications include calculating pressure differences at various depths and using hydraulic systems for force amplification.
