What is the Difference between Mass and Weight ?


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Mass is the measure of the amount of matter in a substance. The unit of mass is gram. 

Weight is the mass of a object multiplied by gravity. The unit of weight is the Newton (N) or in the English system, pound (lbs)

The mass of an object would be the same wherever you are in the universe. The weight however would different depending on whether the object was on the earth or another planet.