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
When a machine reduces the force, it increases the distance. Energy is force multiplied by distance. You reduce the force by half, you have to cover the twice the distance to maintain the same energy.
Let’s say that if you were to do a straight deadlift of that 54 kg object, there is a one meter distance. However, if you apply 3 kg of force, and when you add up all the distance those gears travelled, it would 18 metres and not 1 m.
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