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A tank, initially at rest , is filled with water to a height H=4m. A small orifice is made at the bottom of the wall.Find the velocity attained by the tank when it becomes completely empty. (Assume the mass of the tank and friction to be negligible.)enter image description here

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  • $\begingroup$ Show what you have tried. Sounds like a homework question. $\endgroup$ – Deep Mar 14 '19 at 6:14
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    $\begingroup$ Hi Shikhar and welcome to the Physics SE! Please note that we don't answer homework or worked example type questions. Please see this page in the site help for more on what topics you can ask about here. $\endgroup$ – John Rennie Mar 14 '19 at 8:16
  • $\begingroup$ This looks less like a "fluid mechanics" problem and more like a "how to apply conservation of momentum and energy properly" problem. $\endgroup$ – Richard Metzler Mar 14 '19 at 9:01
  • $\begingroup$ Sorta the opposite of physics.stackexchange.com/q/153361/25301 $\endgroup$ – Kyle Kanos Mar 14 '19 at 10:00
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    $\begingroup$ @RichardMetzler Seems like a mix of Torricelli's law and conservation of momentum. I could see why this might come up when talking about fluids. $\endgroup$ – JMac Mar 14 '19 at 11:05