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harrylin
harrylin is offline
#2
Apr7-11, 09:25 AM
P: 3,178
Quote Quote by Shyan View Post
[tex]{F}=\frac {{\gamma}^3 {m} {v}^2}{{c}^2} + \gamma {m} {a} [/tex]

You all know this equation.Relativistic newton's second law.
The problem is as follows:
As you know [tex]\gamma[/tex] is dimensionless.So the first term of the right side has dimension of mass.but it should have the dimension of force!
what's wrong here?
thanks
Hi Shyan.

F = dp/dt.

However, the equation that you write, I don't know it.
See http://en.wikipedia.org/wiki/Special_relativity (scroll down to the section on force).
It looks like you forgot a dv/dt term.

Harald