When dr. hewitt immerses the object in water, The loss of weight of the object compared with the buoyant force of the water is equal
The upward force applied to an object that is fully or partially submerged in a fluid is known as the buoyant force. Upthrust is another name for this upward thrust. A body submerged partially or completely in a fluid appears to shed weight or to be lighter, due to the buoyant force.
The bottom (i.e., more submerged part) of an object is always deeper in a fluid than the top of the object, which leads to the existence of a buoyant force. This implies that the force exerted by water must be greater than the force exerted by it downwardly.
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