Speed of light, mass equation

I was wondering if there is and what is the equations that show that as an object accelerates towards the speed of light its mass increase to infinite.
 

jtbell

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You're probably thinking of this equation:

[tex]m = \frac {m_0} {\sqrt{1 - v^2 / c^2}}[/tex]
 
i do believe this is the equation do you have a derivation of where it comes from or could you point me to a site for which it has the derivation.

thanks
 
thanks for the link, it should prove to be a good read
 
I guess another question is how do we measure the initial mass of an object if we are all traveling at a changing velocity due to the constant acceleration of an expanding universe. Or is the initial mass relative to the expanding universe in its own frame of reference?
 

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