Question

what are the causes of buoyant force in points?

Answer 1

Buoyant Force: Cause and Calculation. ... The buoyant force is a result of pressure exerted by the fluid. The fluid pushes on all sides of an immersed object, but as pressure increases with depth, the push is stronger on the bottom surface of the object than in the top.

Answer 2

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pressure exerted by a liquid increase with depth and act in all direction. So, the upward force exerted by the liquid on the bottom of an object is greater than the downward force acting on the top of the object. This gives rise to net force acting on the object in the upward direction, which accounts for the buoyant force .