20
2 Water at Rest and in Motion
a
sea bottom
air
b
z
O
P
pressure
z = 0 -~--....!:..!.~-.... - -- - -- -- .... .
water
z = -h _f! - - - - - - - - - - - - - -,- - - - - - - - - - - - - - - - - - - -'-~)
P.
Pwgh
c
Fig. 2.2: Pressure distribution: a around body and sea bottom, b variation with
water depth, c at the bottom of tanks of different shapes