where is the densityof the fluid and is the accelerationdue to gravity(whichis on
Earth).The pressurethen can be writtenas
Example4:
Whatis the total pressureexperiencedby a diverin a swimmingpool at a depthof meters?
Solution
First we calculatethe fluid pressurethe waterexertson the diverat a depthof meters:
The densityof wateris kg/m^3 , thus
The total pressureon the diveris the pressuredue to the waterplus the atmosphericpressure.If we assume
that the diveris locatedat sea-level,then the atmosphericpressureat sea level is about Pa. Thusthe
total pressureon the diveris
Example5:
Whatis the fluid pressure(excludingthe air pressure)and forceon the top of a flat circularplateof radius
metersthat is submergedhorizontallyat a depthof meters?
Solution:
The densityof wateris kg/m^3. Then
Sincethe forceis then