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Pressure in a liquid grows linearly with depth: P = hρg.
Pressure applied to a confined fluid transmits equally — small force lifts huge load.
The weight of air above us creates pressure — a mercury column rises 76 cm to balance it.
Submerged body experiences upward force equal to weight of displaced fluid.
Liquid surface acts like a stretched membrane — drives capillary rise.
In flowing fluid, higher speed means lower pressure — energy conservation.