Mechanical Properties of Fluids
Class 11 · Mechanical Properties of Fluids

Equation of Continuity

A₁v₁ = A₂v₂ — pipe narrows; particles speed up. Live volume flow rate.

Run simulation

Key Notes

01

For incompressible fluid in steady flow: A₁v₁ = A₂v₂ along any streamtube.

02

Volume flow rate Q = Av is constant — conservation of mass.

03

Narrowing the pipe forces the fluid to speed up.

Formulas

Continuity

Volume flow conserved.

Mass flow

For compressible flow.

Important Points

A river speeds up where it narrows — continuity in action.

Same idea: covering part of a hose nozzle makes water shoot farther.

Equation of Continuity 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.