Fluid Mechanics

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A sluice gate consists of a quadrant of a circle of radius 1.5m pivoted at its centre O. Its centre of gravity is at G, as Shown in fig 1. When the water is level with the pivot O, calculate the magnitude and direction of the resultant force on the gate due to the water and the turning moment required to open the gate. The width of the gate is 3m and it has a mass of 6000kg.

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