Question

A vertical triangular plane area, submerged in water, with one side in the free surface, vertex downward and latitude 'h' has the pressure centre below the free surface by

• A. h/4
• B. h/3
• C. 2h/3
• D. h/2

Answer 1

The correct option is D h/2


Centre of pressure,

$h^{\prime }=\overline{X}+\frac{I_G}{AX}=\frac{h}{3}+\frac{b{h}^3/36}{\frac{bh}{2}.\frac{h}{3}}$

$=\frac{h}{3}+\frac{h}{6}=\frac{(2+1)h}{6}=\frac{h}{2}$