Suppose a long rod of length 6 lakh kms is subjected to movement at one end,does it move immediately or not at another end?
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There are no rigid bodies in relativity. – ACuriousMind Aug 30 '16 at 15:36
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1See also: Is it possible for information to be transmitted faster than light by using a rigid pole? – John Rennie Aug 30 '16 at 15:37
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There are no rigid bodies, in relativity or otherwise (in the real world). – Jon Custer Aug 30 '16 at 16:43