why does an iron nail sink but an iron ship float?
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when volume increases density decreases . when volume decreases density increases .the volume of the iron nail is less and thus its density is more than that of water .hence it sinks in water.the volume of an iron ship is more and of course the density is less . that is why it floats on water.
the ship has hollowed surface in it and contains air in it and hense it besomes less dense than water.d=m/v.
The iron nail does not have air in it, and the ship has hollowed surface in it and contains air in it.
A ship floats because it is hollow from inside and that desreases its mass wich thereforedecreases its density. a nail sinks because compared to its volume its mass is great. thats why nail sinks and aship doesnt
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