Torques without Rotation: the Right-Angle Lever

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Joel A. Shapiro
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….
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Written by physicsgg

June 21, 2012 at 6:19 am


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