An aperture in the vertical wall of a water tank is closed by a circular plate 600 mm in diameter. The plate is held in position by four stops, one at each end of the horizontal diameter, and one at...

An aperture in the vertical wall of a water tank is closed by a circular plate 600 mm in diameter. The plate is held in position by four stops, one at each end of the horizontal diameter, and one at each lower end of the two diameters at 60◦ to the horizontal. Determine the stop reactions when the water surface is 450 mm above the plate centre.