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# In infinite MASS does "infinite" refer to a non-converging infinite series (Relativity)?

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- davidLv 72 months agoFavorite Answer
I would assume so but I have never run into it used in that way.

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- husoskiLv 72 months ago
It's loose language for describing an impossible condition. The "relativistic mass" of an object with nonzero rest mass grows without bound as its speed relative to the observer approaches c.

The concept of relativistic mass isn't used much any more. The only thing it does is preserve the Newtonian formulas for momentum (p = mv) and kinetic energy (K = (1/2)mv^2), at the expense of clarity. Rest mass is a fundamental, observer-independent property of a particle. "Relativistic mass" is not.

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- Sanjay1 month agoReport
Accelerated mass..... Agree with you!

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