Equations · equation
Pascal's Principle
Fluid Dynamics · 1653
- Equation
- Δp is the same everywhere in a confined fluid ⇒ F₂/F₁ = A₂/A₁
- Field
- Fluid Dynamics
- Named After
- Blaise Pascal
- Symbols
- Δp a change in pressure applied to an enclosed fluid · F₁, F₂ the forces on two pistons · A₁, A₂ their areas
- Year
- 1653
Significance
Push on a confined fluid anywhere and the pressure rises everywhere by the same amount — so a small force on a small piston becomes a large force on a large one. Every hydraulic jack, brake and excavator arm is this. It trades force for distance like a lever, and the work is the same at both ends.
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