| http://www.w3.org/ns/prov#value | - Placing 25 Kilograms of mass at the top and having it fall through a distance of 1.5 meters makes less than 400 joules of energy. here is the calculation:mass * acceleration * distance = 25kg * 9.8m/sec^2 * 1.5 metersThis would allow the lamp to run for less than 400 seconds or about 6 to 7 minutes.the claim that the lamp would run for 4 hours is a fraud.
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