Mechanical Properties of Fluids
Class 11 · Mechanical Properties of Fluids
Pascal's Law (Hydraulic Lift)
F₁/A₁ = F₂/A₂ — small input force lifts a heavy load via large piston.
Key Notes
01
Pressure applied to an enclosed fluid is transmitted equally in all directions.
02
Hydraulic lift: small input force F₁ on small area A₁ produces large output F₂ on large area A₂.
03
Mechanical advantage = A₂/A₁; conservation of volume → input distance × A₁ = output distance × A₂.
Formulas
Pascal's law
Same pressure throughout.
Important Points
Energy is conserved: small force × large distance = large force × small distance.
Hydraulic brakes, jacks, presses all rely on Pascal's law.
Pascal's Law (Hydraulic Lift) 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.