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500 n is a force created by a mass (500 / 9.807) = 50.98 kg

so: potential energy = m * g * h = 50.98 * 9.807 * 10 = 5000 joules.

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if it was 500 kg (not newtons) weight, then m*g*h = 500 * 9.807 * 10 = 49035 joules.

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Q: What is the potential energy of a 500 N weight before it falls 10 m?
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