Recent content by jeffwu78

  1. J

    Another paradox from the force transformation laws?

    After going crazy about this paradox for a couple of days, I think I have a good hunch of how to resolve the paradox. The key is that object 1 must use some of its internal energy (for example, in a compressed spring) in order to exert the force on object 2 for any nonzero period of time, and...
  2. J

    Another paradox from the force transformation laws?

    >> Fact is:In both cases, it is what you said in the second case.Difference is:The first case uses momentum is mv, the second uses ymv Thanks for all the replies. But what do you mean by the first or second case? The two scenarios are describing the same events, but viewed from different...
  3. J

    Another paradox from the force transformation laws?

    Hi all, I've been recently digging into SR in my attempts to better understand electromagnetics. One thing that has been giving me trouble is the force transformation laws, which seem to give rise to some pretty gnarly paradoxes, one of which I've listed here: Consider two objects, where...
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