Zwerius - I rechecked my formula: power = m x 9.8 N/kg x meters and I don't see anything wrong with it. I agree that this is power NOT energy. But power over time IS energy.
The power stored and then dissipated by it going down hill over time is energy.
Watts wrong with that?
Steve
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consulting on geothermal heating/cooling & rational energy use since 1990
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