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Frame of Reference Dependant Mass & the Resulting Conflicts

  1. Jul 4, 2015 #1
    Hello,
    Please:

    • Assume a universe void of all matter
    • Visualize 2 parallel paths, 10 meters apart. Let’s call them x and x'
    Vessel X is moving along x and vessel X' is moving along x'
    Vessel X has a mass of 1 metric ton and vessel X’ has a mass of 2 metric tons
    • At t0 the two vessels are sufficiently apart to have negligible gravitation towards one another
    • The two vessels are moving at a relative velocity of 100 km/h towards a 10 meter flyby. However the actual shortest separation will be less than 10 meters due to deviation from straight paths due to gravitation between the two vessels
    • In the frame of reference of X the gravitation is between a 1 ton vessel and a 2 ton vessel + the mass equivalent of the kinetic energy of the 2 ton vessel
    • In the frame of reference of X’ the gravitation is between a 2 ton vessel and a 1 ton vessel + the mass equivalent of the kinetic energy of the 1 ton vessel
    • In the frame of reference of X the gravitation between the 2 vessels is stronger than the gravitation in the frame of reference of X’. This is because the mass equivalent of the kinetic energy of the the 2 ton vessel is greater than mass equivalent of the kinetic energy of the 1 ton vessel
    o How can this conflict and the resulting difference in deviation from the straight paths be resolved?

    Thanks in advance.
     
    Last edited: Jul 4, 2015
  2. jcsd
  3. Jul 4, 2015 #2

    Dale

    Staff: Mentor

    In modern physics mass is invariant. Also, the source of gravity is neither mass nor energy but rather the stress energy tensor which encompasses energy, momentum, pressure, and stress.
     
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