If I hook up a big gear to a much smaller one to spin it incredibly fast could that be used to generate power? And if so could that idea be used to generate power on a much bigger scale? In my brain it makes perfect sense but there must be something wrong with this idea.
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That’s not how it works.
Power is torque (force) x speed.
For the same power you can either go faster with less force or slower with more force. Think of a bike: low gears for uphill gives more force but slower, whereas higher gears for flat gives more speed but less force. The actual power you’re putting out can remain constant throughout.
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