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Torques without Rotation: the Right-Angle Lever

Classical Physics 2012-06-25 v1 General Relativity and Quantum Cosmology Popular Physics

Abstract

An extended body subject to external forces which exert zero net force and zero total torque in the rest frame, may experience a nonzero torque in another inertial frame, and nonetheless does not rotate. Long known as the Trouton-Noble or right-angle lever paradox, there has been extensive discussion and indeed controversy, but a clear understanding comes from a suitable treatment of angular momentum and simultaneity.

Cite

@article{arxiv.1206.4487,
  title  = {Torques without Rotation: the Right-Angle Lever},
  author = {Joel A. Shapiro},
  journal= {arXiv preprint arXiv:1206.4487},
  year   = {2012}
}

Comments

1 figure, submitted to Am. Journ. of Physics

R2 v1 2026-06-21T21:22:28.777Z