Buoyant force provides an upward force on floating objects that is equal to the weight of the fluid displaced by the submerged part of the object. If this buoyant force is equal to or greater than the weight of the object, the object floats.
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Buoyant force keeps floating objects afloat by balancing their weight. For an object to float, the buoyant force must equal the object’s weight. If the object’s density is less than the fluid’s, it displaces enough fluid to generate this equal buoyant force, maintaining flotation.