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On the paradox of the free falling folded chain. (English) Zbl 0899.70006

Summary: It is shown both by experiment and also by numerical simulation that for a vertically hanging folded chain the free part, if released, is falling faster than a free falling body under gravitational acceleration. A qualitative explanation of this paradoxical phenomenon is given by showing that a downpulling force at the fold is created. In the simulation, this force is also calculated quantitatively.

MSC:

70E15 Free motion of a rigid body
70-05 Experimental work for problems pertaining to mechanics of particles and systems
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