Mass is measured by

Answer 1

Mass is a measure of the resistance of an object to changes in velocity, as described by Newton's Second Law, F=ma (weight is the force generated when the acceleration is due to gravity).

The reference standard for mass is the International Prototype Kilogram, so you could use a set of scales to compare your object to that. You could measure the extension of a spring with the object hanging from it, knowing how much a spring extends normally (Hooke's law).

If you found yourself somewhere without gravity, you could spin the object round on the end of a rope and measure the force it takes to keep it in a circle, or attach a rocket which provides a known amount of thrust.

As a cataclysmic alternative, you could fire antimatter at the object until it was entirely destroyed, and measure the energy released using E=mc2 to find the mass destroyed, which will be your object and an equivalent mass of antimatter.

Answer 2

Mass is a measurement of a body of matter. The definition for this word is a coherent large body of matter that has no specific shape.

Answer 3

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