The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid and H = Height of the liquid)
A. $$\frac{{{\text{wH}}}}{2}$$
B. $${\text{wH}}$$
C. $$\frac{{{\text{w}}{{\text{H}}^2}}}{2}$$
D. $$\frac{{{\text{w}}{{\text{H}}^2}}}{4}$$
Answer: Option C

The water pressure is