Do objects moving at faster speeds have a stronger gravitational pull?

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Discussion Overview

The discussion revolves around the relationship between the speed of objects and their gravitational pull, particularly whether objects moving at faster speeds exhibit a stronger gravitational effect. Participants explore this concept through various frameworks, including Newtonian mechanics and General Relativity, while addressing implications of relativistic mass and momentum.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants propose that higher relative movement results in a stronger gravitational pull as perceived by a stationary observer.
  • Others challenge this view, questioning how gravitational pull can increase when the curvature of a test particle's path remains the same regardless of the relative motion of the Earth or the particle.
  • One participant suggests that the increase in mass due to higher relative speed implies a greater gravitational force according to Newton's law, and a greater curvature in spacetime according to General Relativity.
  • Another participant argues against the use of relativistic mass, stating that modern physics prefers invariant mass and highlights the importance of the stress-energy tensor in General Relativity.
  • There is a discussion about whether momentum contributes to the warping of spacetime and how it relates to the light speed limit.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between speed, mass, and gravitational pull. While some assert that increased speed leads to increased gravitational effects, others contest this notion, leading to an unresolved debate.

Contextual Notes

Limitations include the reliance on different interpretations of mass (relativistic vs. invariant) and the complexities of the stress-energy tensor in General Relativity, which are not fully resolved in the discussion.

  • #31
Dale I didn't say anything offensive there.
You can see in the thread itself: https://www.physicsforums.com/showthread.php?t=265994".
I don't try to be offensive.
But I do like to question and not just accept. I don't like to assume something is just right.
When something shows an inconsistency - to me of course - I question it further.

Mentz has made a good effort but we all have to be able to say when we get to the point that we just don't know; even perhaps offer that maybe someone else here may be able to further the topic with more knowledge.

Do you know one of the things I would wish for?
That is an educational site that is evidence data based rather than explanation based.
Surely scientific data can be summarised to show how the broader experiment producing it indicates the principle being tested.

We have our 'thought experiments' but they are no replacement for data that verifies a principle - which of course is what science tries to do. It would be nice if some actual data could be linked with these thoughts.

Those are just wishes of course. I also wish we could all have the toys that the scientists get to play with (I am saying 'play' playfully not insultingly). I have experiments in mind but no easy way to do them. They say 'where there's a will; there's a way' but obviously the will has to be concentrated enough.
 
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