use least variation on integral of action and prove principle of equivalence
here is the proof and explanations: https://mdashf.org/2012/06/15/least-action-principle-and-principle-of-equivalence/
use least variation on integral of action and prove principle of equivalence
here is the proof and explanations: https://mdashf.org/2012/06/15/least-action-principle-and-principle-of-equivalence/