Does a clock in free-fall slow due to gravitational time dilation?
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Dec30-11, 03:46 AM
I imagine I have two clocks that are synchronised and are sitting a long way from a large massive body. I hold on to clock A and let clock B fall towards the mass. Let's assume that the falling clock B gets close to the massive body but somehow misses it, swings around and travels back to me.
Simply arguing, I would say that clock B suffers a combined effect of SR (twin paradox) and GR (gravitational time dilatation), both of which slow clock B down compared to clock A.