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Article

Newton’s Third Law in the Framework of Special Relativity for Charged Bodies

1
Department of Electrical & Electronic Engineering, Faulty of Engineering, Ariel University, Ariel 40700, Israel
2
Center for Astrophysics, Geophysics, and Space Sciences (AGASS), Ariel University, Ariel 40700, Israel
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Lavagno
Symmetry 2021, 13(7), 1250; https://doi.org/10.3390/sym13071250
Received: 24 May 2021 / Revised: 13 June 2021 / Accepted: 26 June 2021 / Published: 12 July 2021
(This article belongs to the Special Issue Symmetry and Geometry in Physics II)
Newton’s third law states that any action is countered by a reaction of equal magnitude but opposite direction. The total force in a system not affected by external forces is, therefore, zero. However, according to the principles of relativity, a signal cannot propagate at speeds exceeding the speed of light. Hence, the action and reaction cannot be generated at the same time due to the relativity of simultaneity. Thus, the total force cannot be null at a given time. In a previous paper, we showed that Newton’s third law cannot strictly hold in a distributed system where the different parts are at a finite distance from each other. This analysis led to the suggestion of a relativistic engine. As the system is affected by a total force for a finite period, the system acquires mechanical momentum and energy. The subject of momentum conversation was discussed in another previous paper, while energy conservation was discussed in additional previous papers. In those works, we relied on the fact that the bodies were macroscopically natural. Here, we relax this assumption and study charged bodies, thus analyzing the consequences on a possible electric relativistic engine. View Full-Text
Keywords: Newton’s third law; electromagnetism; relativity Newton’s third law; electromagnetism; relativity
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MDPI and ACS Style

Rajput, S.; Yahalom, A. Newton’s Third Law in the Framework of Special Relativity for Charged Bodies. Symmetry 2021, 13, 1250. https://doi.org/10.3390/sym13071250

AMA Style

Rajput S, Yahalom A. Newton’s Third Law in the Framework of Special Relativity for Charged Bodies. Symmetry. 2021; 13(7):1250. https://doi.org/10.3390/sym13071250

Chicago/Turabian Style

Rajput, Shailendra, and Asher Yahalom. 2021. "Newton’s Third Law in the Framework of Special Relativity for Charged Bodies" Symmetry 13, no. 7: 1250. https://doi.org/10.3390/sym13071250

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