Pressure (Definition)
Pressure = Force / Area
P = F / A
Unit: pascal (N/m²)
P = F / A
Unit: pascal (N/m²)
Pressure in a Liquid Column
P = h × ρ × g
(depth × density × gravity)
(depth × density × gravity)
Pascal's Law
Pressure applied at one point
is transmitted equally in all directions.
is transmitted equally in all directions.
Hydraulic Machine Formula
F₂ / F₁ = A₂ / A₁
(Force ratio = Area ratio)
(Force ratio = Area ratio)
Atmospheric Pressure
Pressure exerted by air column
≈ 1.01 × 10⁵ Pa at sea level
≈ 1.01 × 10⁵ Pa at sea level
