A large cylindrical tank has a hole of area A at its bottom. Water is poured in the tank by a tube of equal cross-sectional area A ejecting water at the speed υ.

The cross-sectional area of the tank is huge compared to the hole. For the water to eject at speed υ water needs to be at a certain height in the vessel, as . Thus, the water rises to height after which it won’t rise as it’s constantly exiting from the bottom.

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