Hydrostatic forces on plane surface (vertical, horizontal & inclined)

◆Statics Fluid◆

● Total pressure (F)= It is defined as the force exerted by static fluid on the surface when the fluid comes in contact with the surface. This force is always at right angle to the surface.

•Unit= N

● Center of pressure (h*)= It is defined as the point on a surface at which total pressure is applied.

•unit= meter

Horizontally immersed surface

Horizontally immersed surface

Hydro-static force F= ρ ghA

Center of presser h*= h

Vertically immersed surface

Vertically immersed surface

Hydro-static force F= ρ ghA

Center of presser h*= h+(I/Ah)

Inclined immersed surface

Inclined immersed surface

Hydro-static force F= ρ ghA

Center of presser h*= h+(Isin^2/Ah)

Where

F= Hydrostatic force.

ρ = Density of fluid.

A= Area of wet surface.

h= vertical distance from free surface and cg.

h*= centre of pressure.

I= moment of inertia of wet surface.