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What is Buoyant Force?
Buoyant force
Imagine a rubber ball being dropped in a tub full of water. We can observe that the larger portion of the ball stays above the water surface, and the smaller portion of the ball remains submerged in the water. When we try to submerge the ball completely, we would experience resistive force acting on the ball. The more the ball gets submerged, the harder and harder we have to push the ball to keep it in that position. Now, if we stop applying the force, the ball would pop up back to its original position. Here the resistive force that is acting on the ball is the buoyant force. Not only water, liquids such as mercury, oil, etc also exert buoyant force on the objects that are submerged in them
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