When a block of plastic is emerged in water then the buoyant force on plastic block is greater than its weight. Hence, plastic block comes up when released under water we can also say that the density of plastic is less than the density of water so it comes up when released under water.
The buoyant force is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. … Hence a plastic block floats on the surface of the water because the buoyant force exerted by water is greater than its weight which also means its density is lesser than that of water.
Answer:
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When a block of plastic is emerged in water then the buoyant force on plastic block is greater than its weight. Hence, plastic block comes up when released under water we can also say that the density of plastic is less than the density of water so it comes up when released under water.
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The buoyant force is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. … Hence a plastic block floats on the surface of the water because the buoyant force exerted by water is greater than its weight which also means its density is lesser than that of water.
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