Frame of Reference Dependant Mass & the Resulting Conflicts

[a1call]

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.

 

[Dale]

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.