OA Dropping tide fresh water sea water 3.0 m (SG = 1.02) h %3D stopper B

Required information A 90° elbow in a horizontal pipe is used to direct water flow upward at a rate mof 35 kg/s. The diameter of the entire elbow is 10 cm. The elbow discharges water into the atmosphere, and thus the pressure at the exit is the local atmospheric pressure. The elevation difference between the centers of the exit and the inlet of the elbow is 50 cm. The weight of the elbow and the water in it is considered to be negligible. Take the density of water to be 1000 kg/m³ and the momentum-flux correction factor to be 1.03 at both the inlet and the outlet. 50 cm Water m kg/s DATUM: Assume positive up and to the right Determine the anchoring force needed to hold the elbow in place. N. PALLE The anchoring force needed to hold the elbow in place is The resultant direction of the force is

(a) Compare the resultant force acting on the gate if we change the shape of the gate from a triangle to an equivalent circle. (b) Compare the line of actions, as well. The initial location of the 0.7-m-high and 0.7-m- wide triangular gate is shown in the figure below. 0.9 m Water 0.3 m B 0.7 m 0.7 m