Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centre of gravity
remains above the centre of gravity
coincides with the centroid of the volume of fluid displaced
remains below the centre of gravity

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

The force necessary to maintain equilibrium of a submerged body
The resultant force on a body due to the fluid surrounding it
The resultant force acting on a floating body
Equal to the volume of liquid displaced

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