On 14 February 2014 14:39, Edgar L. Owen <[email protected]> wrote: > Liz, > > As usual, you are late to the party. >
And I see you haven't lost any of your wit and charm. > > The accelerating elevator is in deep space. There are no tidal forces. > The tidal forces are for the non-accelerating elevator resting on the surface of the Earth. > > The tidal forces of EARTH'S gravitation on the man standing on earth are > negligible and can be ignored. They are just the difference in > gravitational pull on his head and feet. > Plus as I mentioned the fact that the gravitational field of the Earth is centred on the centre of the Earth. Hence the tidal force has two components, a vertical one you just described and a horizontal one that I mentioned. The point of the exercise was to answer the question of whether acceleration curves space, and if not, whether that violates the equivalence principle. Hence *all* points of comparison are relevant. But in any case, hopefully you now know that acceleration doesn't curve space, and that this doesn't violate the equivalence principle. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
