Hydrostatic Columns

Deeper Column Has Larger Pressure

A clean hydrostatic column binds density, gravity, depth, and pressure. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Depth closes the hydrostatic ledger

Density 2, training gravity 10, and depth 3 metres give pressure difference 60 pascals.

2×10×3=602\times10\times3=60
Hydrostatic ledgerDensity, gravity, depth, and pressure are checked.rho=2 kg/m^3g=10 m/s^2h=3 mdP=60 Pa

The clean gravity is a training value

This book uses training gravity 10 so the pressure ledger stays exact.

ΔP=60 Pa\Delta P=60\ \mathrm{Pa}
Training gravityThe diagram carries checked labels only.rho=2 kg/m^3g=10 m/s^2h=3 mdP=60 Pa