Inconsistency in Goldstein’s Lagrangians for Relativistic Point Particles?

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2 months ago

# @StackPhysics

It is stated in the footnote at the bottom of page 322 that 7.162 corresponds to $f(y)=-c \sqrt{y}$, which it clearly must for $L=m f(u_v u^v)$ to equal 7.162, but the derivative seems to be wrong. Is there an error here? Regardle ...Read More