+1 vote
in Fluid Mechanics by (118k points)
A square lamina (each side equal to 2m) is submerged vertically in water such that the upper edge of the lamina is at a depth of 0.5 m from the free surface. What will be the depth (in m) of the centre of pressure?

(a) 1.32

(b) 1.42

(c) 1.52

(d) 1.72

This question was addressed to me in unit test.

My query is from Hydrostatic Force on Plane Area in section Hydrostatic Forces on Surfaces of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
Right answer is (d) 1.72

Explanation: The depth of the centroid y and the centre of pressure yCP are related by:

where I = the moment of inertia and A = area. Now,

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