Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
David Bowman wrote:
You are correct that invariance under Galilean boosts *by itself*
does not exclude a linear function of v. But that was *already*
excluded by the isotropy of space with the argument that L had
to be a function of *square speed* v^2.
Then I need to repeat my original objection that this is a
circular argument. AFAIK the development of the Lagrange equation
uses KE(translation) = (1/2)mv^2 as an a prioi, given by Newton's
laws.
Bob Sciamanda