Fig. shows a rectangular sluice gate AB, 2m wide and 3 m long hinged at A....

 

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Fig. shows a rectangular sluice gate AB, 2m wide and 3 m long hinged at A. It is kept closed by a weight fixed to the gate. The total weight of the gate and weight fixed to the gate is 300 kN. For the figure shown below, find the height H needed to make the rectangular gate AB is about open.use pressure diagram method (prism method) Water SURFACE H HINGE Gate width-b Fig. shows a rectangular sluice gate AB, 2m wide and 3 m long hinged at A. It is kept closed by a weight fixed to the gate. The total weight of the gate and weight fixed to the gate is 300 kN. For the figure shown below, find the height H needed to make the rectangular gate AB is about open.use pressure diagram method (prism method) Water SURFACE H HINGE Gate width-b