FLUID STATICS & FLUID DYNAMICS

PRERNA FOR IAS

FLUID STATICS & FLUID DYNAMICS

1. Pressure in a Fluid

Pressure in a fluid is the force exerted per unit area by a liquid or gas. In a stationary fluid, pressure increases with depth because the weight of the fluid above increases. The pressure at a depthis given by the formula, whereis density,is gravitational acceleration, andis depth. Total pressure includes atmospheric pressure acting on the fluid surface. Fluid pressure acts equally in all directions and is an important concept in dams, water tanks, submarines, and hydraulic systems. Understanding fluid pressure helps ex