A thin 4-ft-wide, right-angle gate with negligible mass is free to pivot about a frictionless hinge at point \(O\), as shown in Fig. P2.109. The horizontal portion of the gate covers a 1 -ft-diameter Figure P2. 109 drain pipe that contains air at atmospheric pressure. Determine the minimum water depth, \(h\), at which the gate will pivot to allow water to flow into the pipe.

Figure P2. 109

Transcribed Image Text:

Width = 4 ft Right-angle gate Water h Hinge 3 ft- -1-ft-diameter pipe