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How to calculate potential energy of water in a tank? 
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#1
Sep1310, 11:20 AM

P: 8

Suppose you have a cylindrical tank of water that is filled to height h. Total mass of water is M. How do you calculate the potential energy of water relative to the base of the tank?



#2
Sep1310, 11:38 AM

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P: 41,109

What is the context of the question? What do you intend to use the PE for? 


#3
Sep1310, 11:44 AM

P: 8

I just want to know what the stored p.e. is



#4
Sep1310, 11:54 AM

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P: 41,109

How to calculate potential energy of water in a tank?
PE is relative to something, it is not an absolute quantity. It is valid to say that the stored PE of water in a tank is zero. And then if the water flows out to some other tank, there may be a change in the stored PE... 


#5
Sep1310, 03:00 PM

P: 8

does this make sense:
g=gravitational acc y=water level from base A=area of water surface r=water density m=total mass of water U=PE then dU=grAydy U=1/2grAh^2=1/2mgh (m=rAh) 


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