Pressure
चाप
Pressure in solids and fluids, liquid pressure P = hρg, Pascal law and hydraulic machines, Archimedes principle, upthrust, floatation.
Exhaustive chapter notes covering liquid pressure derivation ($P = h\rho g$), Pascal’s law and hydraulic machines, Archimedes’ principle, upthrust calculations, law of floatation, and atmospheric barometers for SEE.
High-Yield Exam Focus Questions (1)
High-probability exam questions curated specifically for Pressure.
Exam Rationale: CDC Specification Grid Unit 8 (Pressure): Pascal’s law application numerical or diagrammatic analysis is tested annually as a high-ability application question.
Quick Revision Takeaways
Common Exam Pitfalls to Avoid
⚠️ Common Error: Using density of the solid when calculating upthrust.
✓ Correct Approach: Upthrust strictly depends on the density of the displaced fluid (U = V_submerged · ρ_fluid · g).
Why: Buoyancy is a fluid reaction force, independent of whether the object is wood, iron, or stone.