A radial gate, 2 m long, hinged about a horizontal axis, closes the rectangular sluice of a control dam by the application of a counter-weight W (see fig. 2.33).
Determine (i) the total hydrostatic thrust and its location on the gate when the storage depth is 4 m , and (ii) for the gate to be stable, the counterweight W. Explain what will happen if the storage increases beyond 4 m .
FIGURE CAN'T COPY.