From: H Veeder
The problem with the explanation offered in the video is that it could apply to a rope but ropes don't behave like that so the explanation is not specific to the behaviour of the chain. http://www.youtube.com/watch?feature=player_embedded <http://www.youtube.com/watch?feature=player_embedded&v=6ukMId5fIi0> &v=6ukMId5fIi0 Wire could behave like the chain in the video, or maybe stiff rope. Think "slinky" . . you probably need a certain amount of stiffness to get a spring effect in the uncoiling. It is more than momentum.

