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
You’re exerting less force, but over a longer distance.
Energy = force * distance.
A 2:1 lever moves one side twice as far as the other, and with half the force. The product(energy) is the same on both sides.
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