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by Alexander on October 27th, 2009
Einstein's special theory of relativity says no such thing. It says that rest mass is invariant of Lorentz and equal to the length of of co-variant vector of Energy-Momentum
Mass = 1/c² length of vector [E, cPx , cPy , cPz]
Anyway when speed increases from 0.9 to 0.95, then increase in energy E is from
1/√(1-0.9²)to
1/√(1-0.95²)
that is by 39.6%
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You're reading Einsteins special theory of relativity says that mass is related to velocity by m=mo/sqrt(1-v^2/c^2)=mo(1-(v^2/c^2)^-1/2 mo=rest mass c=velocity of light determine increase of mass of an object when v increases from 0.9c to 0.95c. approx. % increase=?
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Comments
Alexander edit your answer with a highlight and backspace. The mass in question is the relativistic mass and is correct above. It is part of why no object can reach c as they need a continually increasing source of accel to go with a mass that increases with velocity.
by archimedes on November 13th, 2009
PLus Einstein would never use rest mass!!
by archimedes on November 18th, 2009