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Q & A: hydraulics and energy

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Most recent answer: 07/23/2013
Q:
If i lift a 2 ton weight with a hydraulic jack ,it takes very little energy, if i let it fall it seems to expel more energy,if this is true then im getting more out than im putting in,perhaps? due to gravity?If this is so ,if we were to use hydraulics to lift great weights and let them fall ,Could we create energy this way?
- T BOYLE (age 50)
IRELAND
A:

No, you're putting in more energy than you get out. What the hydraulic jack lets you do is to put the energy in slowly, not using too much force.

Mike W.


(published on 07/23/2013)

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