Column pressure

Column pressure

As an object falls to a lower depth in a liquid, the pressure the liquid exerts on it increases. This is because there is a greater weight of liquid above the object.
The pressure an object experiences at the bottom of a column of water is given by \(\text{pressure}=\text{height of column}\times\text{density of liquid}\times\text{gravitational field strength}\) or \(p=h\rho g\) where:
- \(p\) is the pressure in pascals, Pa
- \(h\) is the height of the column in m
- \(\rho\) is the density of the liquid in kg/m³
- \(g\) is the gravitational field strength in N/kg

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