The weight of a falling chain, revisited

Details The weight of a falling chain, revisited The weight of a falling chain, revisited

2010-05-17

arxiv.org/abs/1005.2887v1

American Journal of Physics (2010) 013007AJP

Physics

Popular Physics

Scientific paper

A vertically hanging chain is released from rest and falls due to gravity on a scale pan. We discuss the various experimental and theoretical aspects of this classic problem. Careful time-resolved force measurements allow us to determine the differences between the idealized and its implementation in the laboratory problem. We observe that, in spite of the upward force exerted by the pan on the chain, the free end at the top falls faster than a freely falling body. Because a real chain exhibits a finite minimum radius of curvature, the contact at the bottom results in a tensional force which pulls the falling part downward.

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