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15 November, 02:18

Why does a buoyant force act on every object in a fluid?

Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.

Forces acting on the top of the object are greater than the other forces acting on the object.

The water pressure pushing upward is greater than the force of gravity pulling downward.

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  1. 15 November, 03:18
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    The buoyant force comes from the pressure exerted on the object by the fluid. Because the pressure increases as the depth increases, the pressure on the bottom of an object is always larger than the force on the top - hence the net upward force.
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