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What units are used to measure the weight of an object?
The same units as mass, for objects in the same gravitational reference frame.
Is a gram leng th or weight?
Gram is neither a measure of length, nor of weight. It is a unit of mass. Sometimes this is confused with weight, but it isn't the same thing.
Is kilograms appriate to measure weight?
The kilogram is the unit of MASS, not of weight. This is often confused. The SI unit of weight is the same as the unit for force, namely the newton.
What is weight equal to 2240lb?
A pound (lb) is a measure of mass which is not the same as weight. An oject with a mass of 2240 pounds on earth would have a mass of 2240 pounds on the moon. But the weight of the object would be only one sixth on the moon. A mass of 2240 lb is equivalent to an Imperial ton.
Why will a person's mass never change whether they are on earth or on the moon?
Because mass is not the same as weight. Weight is mass times gravity so your weight will change if you are on the earth or moon but your mass will stay the same.
