A man first swims in sea water and then in river water.
(i) Compare the weights of sea water and river water displaced by him.
(ii) Where does he find it easier to swim and why?
(i) The weight of the water displaced is equal to the weight of the man in both cases, when
he swims in seawater and in river water, hence the comparison yields 1:1.
(ii) The man will find it easier to swim in seawater as the density of seawater is
more than that of the river water. Therefore, his weight is balanced in seawater with a lesser part of his immersed inside it
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