Two identical cylindrical vessel with th...

Two identical cylindrical vessel with their bases at the same level each contain a liquid of density `rho`. The height of the liquid in one vessel is `h_(1)` and in the other is `h_(2)` the area of either base is A. What is the work done by gravity is equalising the levels when the two vessels are connected?

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The correct Answer is:

`1//2 pA(h_(2) -h_(1)^(2))g`

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