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A particle is at rest in one frame having mass $m$. It'll attract another mass proportional to its mass ( newtons law) .

We jump into another frame moving close to speed of light. In this frame it's mass will be very very large. It'll attract another mass proportional to its mass,which is larger than in the first frame.

So in the two frames the forces will be different, Which can't be.

Hence we can say that the Newtonian gravity is incomplete. Is this reasoning correct?

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  • $\begingroup$ Does this answer your question? Are moving objects producing stronger gravity fields? $\endgroup$
    – John Rennie
    Commented Feb 17, 2021 at 17:12
  • $\begingroup$ Several problems here: most importantly "speed" (relative to what?) does not increase mass, and Special Relativity does not describe gravitation. Also you seem to be trying to cram Newtonian gravitation in where it does not belong (anywhere in Relativity!). $\endgroup$
    – m4r35n357
    Commented Feb 17, 2021 at 17:12

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