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# Hydraulics

### Force, flow, energy

What does the area of the pressure diagram equal? On a plane, rectangular, vertical surface, force per metre width
What does the bottom of the pressure diagram equal? density x g x h
How can the pressure force be determined by the pressure triangle? density x g x Area
Hydrostatic force on a plane surface (F) = ?? F = density x g x ybar x A
The slope distance from the top of the water to the centre of pressure (where the force acts) l' = ?? l' = Ig/AxLbar + Lbar
What does the Ig stand for in hydraulics? Second moment of area
What is upthrust equal to? Weight of the water displaced = weight of a floating object
How do you calculate the efficiency of a pump? power to water / power supplied
How do you calculate the efficiency of a turbine? power generated / power from water
Created by: Civilman

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