“My weight on the Moon is the same as on Earth.”
Usage Entry 1328 / 1350 60-second read
Mass vs. Weight
The amount of matter (constant) versus the force gravity exerts (varies with gravity).
The comparisoni
“My mass on the Moon is the same as on Earth — about 70 kg. My weight is less because lunar gravity is weaker. Mass is constant; weight depends on gravity.”
The ruleii
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MASS = matter. WEIGHT = gravity pull.
MASS is the amount of matter in an object — constant everywhere. WEIGHT is the force gravity exerts on that mass — varies with location (Earth, Moon, zero-g). Bathroom scales read weight; physics textbooks care about mass. "Weight loss" is technically a mass loss.
Memory aidiii
Remember it like this
Mass stays. Weight changes.