A triangular lamina of area A and height h is immersed in a liquid of density ρ in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is
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a
12A ρgh
b
13A ρgh
c
16A ρgh
d
23A ρgh
answer is B.
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Detailed Solution
Thrust on lamina = pressure at centroid × Area =hρg3×A=13A ρgh