If we accelerate one body with mass m0 on a distance dx, then, we need energy dW:(adsbygoogle = window.adsbygoogle || []).push({});

dW = a m0 dx = dv/dt m dx = m0 dv v

Energy dW, which we gives weight dW= dm c^2

If we put this in differential equation, solvation is

dm/m0 = v dv /c^2

and

(m/m0)=exp(v^2/(2c^2))

But this calculation does not give that m is infinity at v = c.

What failing to my calculation?

(I know normal derivation of special relativity equation)

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# Homework Help: Special relativity from different angle

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