A geometrical method is proposed to clarify misconceptions regarding the so-called “stress effects due to Lorentz contraction” that have recently raised discussions in this Journal. The method is also applied to other related problems that shed additional light on the matter. It is shown that the same method provides a complete understanding of a paradox proposed by Dewan, and that it is applicable to two-dimensional problems. The two-dimensional system analyzed consists of a ring-shaped swarm of independent particles rotating with the same angular velocity.

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