In terms of pressure, what does hydrostatic pressure depend on?

Hydrostatic pressure is the pressure exerted by a fluid at equilibrium due to the force of gravity. It specifically depends on the height of the fluid column above the point in question and the unit weight (or density) of the fluid. The concept is grounded in fluid mechanics, where pressure increases with depth because of the weight of the fluid above.

The formula for hydrostatic pressure can be expressed as P = ρgh, where P is the pressure, ρ (rho) is the fluid density, g is the acceleration due to gravity, and h is the height of the fluid column. In this context, unit weight refers to the weight of the fluid per unit volume, essentially linking density and the gravitational force.

Given this fundamental principle, the combination of unit weight and height directly corresponds to hydrostatic pressure, confirming that this option aligns with the governing equations of fluid mechanics and hydrostatics.