Rotation speed near light speed increasing gravity?

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SUMMARY

The discussion centers on the effects of rotation speed approaching light speed on mass and gravity, specifically in the context of general relativity. It establishes that while special relativity accounts for increased mass and gravity in linear motion, the implications for rotating objects, such as stars, require further exploration. The conversation emphasizes that the kinetic energy from rotation contributes to the effective rest mass, influencing gravitational pull. The Thirring-Lense effect, a form of frame dragging, is noted as negligible compared to the mass increase from high rotational speeds.

PREREQUISITES
  • Understanding of special relativity principles
  • Familiarity with general relativity concepts
  • Knowledge of mass-energy equivalence
  • Basic grasp of rotational dynamics in physics
NEXT STEPS
  • Research the implications of high-speed rotation on mass in general relativity
  • Study the Thirring-Lense effect and its significance in rotating frames
  • Explore the relationship between kinetic energy and gravitational effects
  • Investigate case studies of rapidly rotating celestial bodies
USEFUL FOR

Physicists, astrophysicists, and students studying advanced concepts in relativity and gravitational physics will benefit from this discussion.

SpiderET
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Based on special relativity object with speed nearing to speed of light has increased mass and also its gravity pull is increasing. But this is in special relativity calculated for linear moving objects, not for rotating objects.

Based on general relativity does increase mass and gravity of objects which are rotating at speeds near speed of light? Let's assume a star which is rotating so fast, that's on equator it almost reaches speed of light.

I don't mean rotational frame dragging effect (Thirring Lense effect). This effect is much smaller than potential mass/gravity increase caused by increased mass caused by speed near to speed of light.
 
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SpiderET said:
Based on special relativity object with speed nearing to speed of light has increased mass and also its gravity pull is increasing. But this is in special relativity calculated for linear moving objects, not for rotating objects.

Based on general relativity does increase mass and gravity of objects which are rotating at speeds near speed of light? Let's assume a star which is rotating so fast, that's on equator it almost reaches speed of light.

I don't mean rotational frame dragging effect (Thirring Lense effect). This effect is much smaller than potential mass/gravity increase caused by increased mass caused by speed near to speed of light.

The kinetic energy of rotation effectively adds on to the rest mass for purposes of determining the distant field. So do any other forms of internal energy.
 

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