TY - JOUR
TI - Magic ramie rope for the tug-of-war game
AU - Liu Guo-Liang
AU - Zhao Hong-Zhi
AU - Liu Fu-Juan
AU - Li Xiao-Xia
AU - Hao Xi-Bo
JN - Thermal Science
PY - 2023
VL - 27
IS - 3
SP - 2127
EP - 2133
PT - Article
AB - The tug of war is a sport known for strength, however a weaker team can also  win the game by a suitable team co-operation. A mathematical model is  established, showing that the team co-operation or rhythmical frequency  plays an important role in victory. A team can win even the rope is pulled  to the opposite direction depending upon the rhythmical frequency. A  criterion for rhythmical frequency is obtain to guarantee victory when the  strength is almost same for both teams. Additionally the rope pulling can be  also used for moving a heavy weight object, the principle might be used for  building the great pyramids in ancient Egypt. Finally magic ramie ropes with  special thermoplastic properties and controllable frequency are discussed.