h = height of fluid column - or depth in the fluid where pressure is measured (m, ft)
Hydrostatic pressure in a water column - or depth ( density of water 1000 kg/m 3 ):
|Height of Water Column||Pressure|
The density of water at 4 o C is 1000 kg/m 3 . The pressure acting in water at 1 m can be calculated as
p = ρ g h
= ( 1000 kg/m 3 ) ( 9.81 m/s 2 ) (1 m)
= 9810 Pa
The density of water at 32 o F is 1.940 slugs/ft 3 . The pressure acting in water at 3 ft can be calculated as
p = ρ g h
= ( 1.940 slugs/ft 3 ) ( 32.17405 ft/s 2 ) (3 ft)
= 187.3 lb f /ft 2 (psf)
= 1.3 lb f /in 2 (psi)
Ocean pressure varies with depth and position (latitude) on earth.
|Ocean Pressure (MPa)|
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