High School Internal energy and gravitation

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Is gravitational potential included in the internal energy?
Suppose that we just put a cylinder of an ideal gas in a higher place. Does it's internal energy increase?
 
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hokhani said:
Suppose that we just put a cylinder of an ideal gas in a higher place. Does it's internal energy increase?
Internal energy of the cylinder? No.

Internal energy of the cylinder+earth system? Yes.
 

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