An object with a volume of 0.001 m^3 is submerged in water (density 1000 kg/m^3, g = 9.8). What is the buoyant force?

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Multiple Choice

An object with a volume of 0.001 m^3 is submerged in water (density 1000 kg/m^3, g = 9.8). What is the buoyant force?

Explanation:
Buoyant force equals the weight of the fluid displaced. The object, fully submerged, displaces 0.001 m^3 of water. The mass of that displaced water is density times volume: 1000 kg/m^3 × 0.001 m^3 = 1 kg. Its weight is mass times gravity: 1 kg × 9.8 m/s^2 = 9.8 N. So the buoyant force is 9.8 N. This matches the given numbers; the other values would come from different displaced mass or gravity.

Buoyant force equals the weight of the fluid displaced. The object, fully submerged, displaces 0.001 m^3 of water. The mass of that displaced water is density times volume: 1000 kg/m^3 × 0.001 m^3 = 1 kg. Its weight is mass times gravity: 1 kg × 9.8 m/s^2 = 9.8 N. So the buoyant force is 9.8 N. This matches the given numbers; the other values would come from different displaced mass or gravity.

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