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I'm guessing that you see 'gravity' as being the same for all observers Simplified? Like if I pick a point in space (and time) and then measure my 'weight', it will be the same for anyone observing, no matter their speed relative me, or what gravity they do it from.You might have a problem there, different observers will give that 'point' different locations inside SpaceTime, so my definition of a location in space and time, might not tally with yours. That is, if you accept that time dilations and Lorentz contractions exist?And with that we need first to agree on 'where' and 'when' you measure. To do that you can use Lorentz transformations, but they are all conceptual, not the direct measurements the observers can do themselves.So if you're looking for a 'invariant' definition, same for all observers, I don't think gravity cuts it.
I thought Gravity was a Force. usually denoted with m/s2Energy requires additional units, generally with a force moving mass through a distance, or: Joules = kg*m*(m/s2)Note, the gravity may be higher at the bottom of Death Valley than the top of Mt. Everest. However, the potential energy of a mass on Earth at the top of Mt. Everest would be higher than a similar mass at the bottom of Death Valley.
I see this thread is called "the new version".Could someone plaese tell me what was wrong with the old version?