4 ms·
With perfect efficiency a 10 kg weight lifted 2 meters would only output about a tenth of a watt over half an hour. That is indeed enough for a led, but not a v
by nohat 14y ago
With perfect efficiency a 10 kg weight lifted 2 meters would only output about a tenth of a watt over half an hour. That is indeed enough for a led, but not a very powerful one. I doubt this is worth it.
- pdonis 14y agoSee the numbers upthread; it's comparable to a kerosene lamp.