Engineering :: Fluid Mechanics and Hydraulic Machines

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The horizontal component of force on a curved surface is equal to the

[A].	Weight of liquid vertically above the curved surface	[B].	Weight of liquid retained by the curved surface
[C].	Product of pressure at its centroid and area	[D].	Force on a projection of the curved surface into a vertical plane
[E].	Scalar sum of all elemented horizontal components

Answer: Option D