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Apr 16, 2016 at 8:29 history edited Ilja CC BY-SA 3.0
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Apr 16, 2016 at 8:03 history edited Ilja CC BY-SA 3.0
typo
Mar 22, 2016 at 11:01 history edited Ilja CC BY-SA 3.0
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Mar 22, 2016 at 10:56 comment added Ilja yes, there is. And it does some work: $mg\Delta h$, where $m$ is the mass of the water displaced by the air. But this is the same work as the pump has to do, to replace the water by air (this lifts the surface, i.e. it's equivalent to liftig the original water out of the bucket to the surface)
Mar 22, 2016 at 10:52 history edited Ilja CC BY-SA 3.0
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Mar 22, 2016 at 10:52 comment added Jaywalker regardless, there is a net upward force on the one side of the conveyer belt applying torque to the generator
Mar 22, 2016 at 10:49 history answered Ilja CC BY-SA 3.0