Class 11 Physics Chapter 9 Mechanical Properties of Fluids – Revision Notes

Quick revision notes for Class 11 Physics Chapter 9 (Mechanical Properties of Fluids). These Class 11 Physics Chapter 9 notes are ideal for quick revision just before exams.

Pressure

• P=F/A; at depth h: P=P₀+ρgh.
• Pascal’s law: pressure transmitted equally in enclosed fluid.

Buoyancy and Flow

• Archimedes’ principle: buoyant force=weight of displaced fluid.
• Continuity: A1v1=A2v2.

Bernoulli and Viscosity

• Bernoulli: P+½ρv²+ρgh=constant.
• Stokes’ law: F=6πηrv.

One-Line Summary

Mechanical properties of fluids cover pressure, buoyancy, flow continuity, Bernoulli’s principle, viscosity, and surface tension — the physics governing how liquids and gases behave at rest and in motion.

Written by Satish

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