Subjects/Basic Physics/Fluid mechanics/Pressure difference in a fluid11. Fluid mechanicsPressure difference in a fluidIn 11. Fluid mechanicsFormulaCopy LaTeXP2−P1=ρg(y1−y2)EquivalentlyCopy LaTeXP+ρgy=constanteDetailfor a homogeneous static fluid.Related formulasRelatedHydrostatic pressureP=P0+ρghOpen formulaOpen in section