The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
A. wA
B. wx
C. wAx
D. $$\frac{{{\text{wA}}}}{{\text{x}}}$$
Answer: Option C
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Pressure in per unit of are in plan is = wx
For total pressure on surface is
= pressure in per unit are × area
= wxA
For pressure it must be wA/x
it must be wx
Fx = density × gravity × h × A
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