Cotton initially floats on the surface of water due to its structure and low density. The cotton fibers are filled with tiny air pockets, creating buoyancy that allows it to stay afloat.
However, over time, cotton can absorb water through capillary action. Capillary action is the ability of liquids to flow against gravity in narrow spaces, such as through the tiny gaps between the cotton fibers.
Once cotton absorbs enough water, its density increases, and it becomes heavier than the water it displaces. This causes the cotton to sink below the surface. The absorption of water changes the balance between the buoyancy and weight of the cotton, leading to its sinking.
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Answer:
Once cotton absorbs enough water, its density increases, and it becomes heavier than the water it displaces. This causes the cotton to sink below the surface. The absorption of water changes the balance between the buoyancy and weight of the cotton, leading to its sinking.
Explanation:
Cotton initally floats on surface of water but after it sinks because it soaks water and becoms heaveir that is why it sink in water