Question

an iron nail sinks in water but a ship made up of the same material float on it ​

Answer 1

Answer:

The density of nail (as of iron) is much larger than the water. So it sinks easily. The weight of the water displaced by the ship is equal to its weight, so it floats. Whereas the weight of the water displaced by the iron nail is less than its weight so the iron nail sinks.

Explanation:

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Answer 2

Answer:

The density plays a major role in floation.

Explanation:

As most of the space in the boat is taken up by air so it causes the overall density of boat to be lesser than that of water. Whereas, the density of the iron nail is more than that of water. Due to this the iron nail sinks while the boat floats on the surface of the water.