Question

A cork floats on water but an iron iron nail sinks in water. why?

Answer 1

Hi friend ,
to be float on water one object density has to equal or less than water density .As cork density is less than water so it will float on it . And the Iron nail has way greater density than water so, it will sink.
_______________________________________________________thanks__

Answer 2

because the density of cork is less then the density of water. so it float but the density of iron is greater then the density of water so it will sink in that bouncy force is also used.
i hope it help u....