ボビンからの糸の引き出しについて

抄録

A problem of extraction of a flexible string from a bobin through a nozzle located at a distance on its axial line is discussed analytically and experimentally. The equations of motion, after it has settled down to a stable state, are exactly solved if the bending rigidity, the extensibility, the air resistance, the internal friction, the gravity effect etc. are neglected.The theoretical results coincide well in character with the experimental ones. In the theory, however, we are obstructed by a contradiction that one of the integral constunts cannot reasonably determined. Some discussions on this problem of interest are presented.