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B Question concerning mass effect

  1. Oct 30, 2016 #1
    We know that the OBSERVED mass increases as the objects approach near to the speed of light. I was wondering that how does a stationary observer observe an increase in mass of an object which is travelling far away from it. I mean mass is a sensation, how it is observed by a stationary observer?
  2. jcsd
  3. Oct 30, 2016 #2
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