Einstein's:Mass increase resulting from Acceleration increase

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SUMMARY

The discussion centers on Einstein's concept of mass in relation to acceleration and velocity. Participants clarify that while relativistic mass increases with velocity, invariant mass remains constant regardless of speed. The confusion arises from the terminology used, as many physicists now prefer to distinguish between rest mass and relativistic mass. The conversation emphasizes the importance of context when discussing mass in the framework of special relativity and general relativity.

PREREQUISITES
  • Understanding of Einstein's theory of relativity
  • Familiarity with the concepts of invariant mass and relativistic mass
  • Knowledge of the relationship between energy and mass, particularly E=mc²
  • Basic grasp of special relativity and its implications on mass and acceleration
NEXT STEPS
  • Research the differences between invariant mass and relativistic mass in physics
  • Study the implications of acceleration on energy and mass in special relativity
  • Explore Einstein's original papers on mass-energy equivalence and their interpretations
  • Examine the role of frame of reference in measuring mass and energy in relativistic contexts
USEFUL FOR

Physicists, students of relativity, and anyone interested in the nuances of mass and energy in the context of special and general relativity.

  • #31
robphy said:
If you are implying that "apparent energy measured by this observer" is redundant, yes, I agree... that is why I did not use such a phrase.
If one is speaking of flat spacetime an inertial frames then it depends on usage. If there is no field present then its bet to refer to the sum of mass-energy and rest energy as "inertial energy." If there is a field present then the potential energy must be added and then one refers to the sum as the "energy" or "total energy." The time component of the 4-momentum will be the inertial energy. The time component of the canonical 4-momentum will be the the total energy.

Pete
 

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