There is a triangular door on an inclined wall submerged in water as shown in the figure. The dimensions of the door in the plane of the wall are b = 2 m × h = 4.4 m and the top of the door is 1.7 m below the water surface. The angle between the water surface and the wall is 0 = 15°. Calculate: (a) the distance from the water surface to the centre of gravity of the door; (b) the horizontal component of the force on the door; (c) the vertical component of the force on the door; (d) the distance, x0, of the centre of pressure of the door from the water surface in the plane of the wall. ho h h2 h

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