Properties Of Solids And Liquids Question 298

Question: A triangular lamina of area A and height h is immersed in a liquid of density $ \rho $ in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is

Options:

A)$ \frac{1}{2}A\rho gh $

B)$ \frac{1}{3}A\rho gh $

C)$ \frac{1}{6}A\rho gh $

D)$ \frac{2}{3}A\rho gh $

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Answer:

Correct Answer: B

Solution:

Thrust on lamina = pressure at centroid × Area = $ \frac{h\rho g}{3}\times A $ =$ \frac{1}{3}A\rho gh. $



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