Mechanical Properties of Fluids
Class 11 · Mechanical Properties of Fluids

Bernoulli's Principle

P + ½ρv² + ρgh = const — manometers show pressure drop where speed is high.

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Key Notes

01

Along a streamline of an ideal fluid: P + ½ρv² + ρgh = constant.

02

Energy interpretation: pressure energy + kinetic energy + gravitational PE per unit volume is conserved.

03

Faster flow ↔ lower pressure (where elevation is constant).

Formulas

Bernoulli's equation

Along a streamline, ideal fluid.

Important Points

Assumes incompressible, non-viscous, steady flow.

Used to derive Torricelli's law for efflux: v = √(2gh).

Bernoulli's Principle notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.