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Question

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?

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Solution

(i) 1:1; The weight of the water displaced by the man in sea and river will be same and will be equal to his own weight.
(ii) He finds it easier to swim in the sea because the density of sea water is more than the density of river water. So his weight is balanced in sea water with only a part of his body submerged in the water.


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