Hydraulics and Fluid Mechanics in ME
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

(Ax̅/IG) + x̅
(IG/x̅) - Ax̅
(IG/Ax̅) + x̅
(IG/Ax̅) - x̅

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Hydraulics and Fluid Mechanics in ME
Surface tension

Is a function of the curvature of the interface
Is also known as capillarity
Decreases with fall in temperature
Acts in the plane of the interface normal to any line in the surface

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