What is the buoyant force acting on a completely submerged object according to Archimedes' Principle?
Answer and explanation
Correct answer: A. Equal to the weight of the fluid displaced by the object
- Step 1: Archimedes' principle states any object immersed in a fluid experiences an upward buoyant force. Step 2. F_b = rho_fluid V_submerged g, which is exactly the weight of the displaced fluid. Answer: Equal to the weight of the fluid displaced by the object. Why not the others: Equal to total weight holds only for floating objects; volume times gravity lacks fluid density; atmospheric pressure acts equally in all directions.
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