Tug of war to compete sporadically starting in the 1960s and would become regular participants as sorority teams in the mid-1980s. The Hope College Pull is an annual tug-of-war contest held across the Black River in Holland, Michigan on the fourth Saturday after Labor Day. Competitors are 40 members of the freshman and sophomore classes. Two teams of eight, whose total mass must not exceed a maximum weight as determined for the class, align themselves at the end of a rope approximately in circumference. The rope is marked with a "centre line" and two markings to either side of the centre line. The
Tug of war (astronomy) Tug of war (astronomy) The tug of war in astronomy is the ratio of planetary and solar attractions on a natural satellite. The term was coined by Isaac Asimov in "The Magazine of Fantasy and Science Fiction" in 1963. According to Isaac Newton's law of universal gravitation In this equation The two main attraction forces on a satellite are the attraction of the Sun and the satellite's primary (the planet the satellite orbits). Therefore, the two forces are where the subscripts "p" and "s" represent the primary and the sun respectively, and "m" is the mass of the satellite. The