Question

A ship made of iron does not sink in water but a iron nail is sink in water .Why ? In

Answer 1

because of streamline shape of the ship

Answer 2

The ship doesn't sink whereas as the nail does is due to the streaming model of the ship as well as the airpockets present in the ship this allows the total weight of the ship to be lighter than the weight of water with the same volume hence the iron ship doesn't sink