# Avg potential energy of molecules in a reservoir

brainslush

## Homework Statement

An insulated cylindrical reservoir of height H is suspended vertically in the field of gravitation. Find the average potential energy of the molecules in the reservoir.

## Homework Equations

F = $$\frac{Gm_{1}m_{2}}{r^{2}}$$

## The Attempt at a Solution

To be honnest I have no clue what to do! Could you please give me a slight hint.

There is no change of pressure, volume or temperature. Another thing is that most of the molecules will be located close to the Earth's surface but due to their movement you will have some kind of distribution.

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