the weight is on a string. That string is connected to a crank that turns a gene... | Hacker News

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		RandallBrown on Dec 21, 2012 \| parent \| context \| favorite \| on: A $5 Lamp Powered Solely by Gravity the weight is on a string. That string is connected to a crank that turns a generator as it falls.

cr1st1an on Dec 25, 2012 [–]

Oh, and as I understand, the amount of weight is important due the resistance of the crank?

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