In [this video](https://youtu.be/umN2iHsw3UY?t=479) a lego motor lifts ~54kg using gear ratios, how can this be possible when the motor only lifts ~3kg by itself? Isn’t that like putting 1 energy into something and getting 18 out of it?
In: Engineering
The overall energy doesn’t change, but you alter other properties…
In this case, by gearing down a motor you allow it to carry much more weight, but you also cause it work much more slowly.
So if you were to lift a weight with your small motor and geared winch, bif you were to run your motor for a minute overall, you are choosing between lifting a 10kg weight five times, or a 50kg weight once – over the course of a minute you have lifted the same 50kg worth of load (so you have used the same amount of energy), but accomplished it in two different ways.
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