Where is the extra energy coming from?
If I can lift a maximum of 60kg with my bare hands, but then I can lift 300kg using pulleys/levers, where did that extra energy come from? Will I still burn calories like I am lifting 60kg or 300kg?
In: Physics
to lift 300kg 1 meter like it weighs 60kg, you have to move the 60kg part 5 meters.
The energy required to do so is the same as just lifting 300kg 1 meter, but it gets spread out
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