Buoyancy

The buoyancy force is the force felt by an object partially/completely submerged in a fluid. It is the result of their being greater force on the bottom of the object than on the top. At deeper depths the pressure is higher than at the surface so an object will always have a greater pressure at the bottom.

Equation for buoyancy

The force experienced due to buoyancy is equal to the force on the bottom minus the force on the bottom. 

The force on the bottom is pressure times 

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