Re: Energy and Mass



Jon Slaughter wrote:
When one measures mass of an object does it include measuring the energy that the object contains? (Since mass and energy are "equivilent")

Yes--Gravitational mass includes ever bit of momentum*-energy



Suppose I have a measure the mass of a box and then I "put" some energy in it. When I measure it will I get a different mass?

Yes--however it'll take more energy than you have laying around.


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