Question

plz explain my question .cause of buoyant Force

Answer 1

When an object is placed in a liquid, the liquid exerts an upward force on it. The tendency of liquid to exert such an upward force on the object is called buoyancy and the upward force exerted by the liquid on the object causes Buoyant Force.

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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.