Thread: A doubt View Single Post
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 Quote by blue_sky Thanks. Is the Mach's principle not embedded in the GR?
Not as I stated it. Imagine an object accelarting against a Minkowslkian background (i.e. a univesre that contains no mass!), you'll still have inertial forces. I think it appears in a more general sense: i.e. the relativity of accelartion.