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what is buoyant force. why buoyant force acts perpendicular to earth surface. explain?

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Buoyant force is the force experienced by a body when it is immersed in a fluid. buoyant force acts perpendicular to the earth's surface as the force usually acts perpendicular to the object's gravitational pull which is perpendicular to the earth . so it acts perpendicular to the end
earth's surface
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