title: Slack dynamics on an unfurling string.
abstract: An arch will grow on a rapidly deployed thin string in contact with a rigid plane. We present a qualitative model for the growing structure involving the amplification, rectification, and advection of slack in the presence of a steady stress field, validate our assumptions with numerical experiments, and pose new questions about the spatially developing motions of thin objects.
authors.affiliation: Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA. hanna@physics.umass.edu
authors.forename: J A
authors.initials: JA
authors.lastname: Hanna
authors.forename: C D
authors.initials: CD
authors.lastname: Santangelo