Hydraulics and Fluid Mechanics in ME
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if

All of these
The area is horizontal
The area is inclined
The area is vertical

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?

The metal piece will simply float over the mercury
Whole of the metal piece will be immersed with its top surface just at mercury level
The metal piece will be immersed in mercury by half
Metal piece will sink to the bottom

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