An iron nail and a piece of thermocol is released after dipping in water. Then the thermocol rises up and the nail sinks down. Explain the reason on the basis of buoyancy.
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the density of iron is more than the density of water therefore the weight of the nail is more than the upthrust experienced by it causing it to sink. However a ship although much larger than the nail floats because the ship is hollow from inside and this space is filled with air which reduces the average density of the ship lower than that of water. Thus even with a small portion of the ship submerged under water, the weight of the water displaced by it becomes equal to the weight of the entire ship.
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- As we that the density of iron nail is more than the density of water.
- The weight of the nail is more than the thermocol it causing it to sink down.
- The thermocol has less density than the density of water so it floats on water.
- Hence when an iron nail and a piece of thermocol are released after dipping in water. Then the thermocol rises up and the nail sinks down.
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