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cowboyro
Premium
join:2000-10-11
Shelton, CT
reply to 88615298

Re: Weights and measures

said by 88615298:

said by cowboyro:

No they don't. A kilogram is a kilogram, whether on the Earth at the North Pole or on the bright side of the moon. Same for a meter, same for a liter.

Actually the moon's gravity is 1/6 that of Earth so a kilogram on Earth would be 1/6 kilogram on the moon.

Also technically gravity is slightly stronger at the north pole so a kilogram at the equator would be slightly more than a kilogram at the north pole.

The mass is a property of an object. It does not change.(*)
Weight on the other side is the force exerted by gravitation. We conveniently refer to mass as weight as on Earth the difference is negligible for most practical purposes. We are actually measuring the weight force and translating into "the mass that produces the weight on Earth".
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(*)exception for objects that absorb or release energy in nuclear fusion or fission reactions.