Question

A siphon tube is discharging a liquid of specific gravity $0.9$ from a reservoir as shown in the figure. Find the pressure at point $C$.

Answer 1

Applying Bernoulli's equation at A and C,
$P_0=P_c+\frac{1}{2}\rho v^2-\rho g\left(1.0\right)$
$\therefore$ $P_C=P_0+\rho g-\frac{1}{2}\rho v^2$
$=1.01\times {10}^5+900\times 9.8-\frac{1}{2}\times 900\times {\left(9.9\right)}^2$
$=6.6\times {10}^4$ Pa