A circular opening, 6m diameter, in a vertical side of a tank is closed by a disc of 6m diameter which can rotate about a horizontal diameter. Calculate the force on the disc. The centre of circular opening is at the depth of 5 m.
(a) 1.38 MN
(b) 2.76 MN
(c) 5.54 MN
(d) 7.85 MN
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This interesting question is from Total Pressure & Vertical Plane Surface Submerged in a Liquid topic in portion Hydrostatic Forces on Surfaces of Fluid Mechanics