Pulley If there are "p" of these parts of the rope supporting the load "W," then a force balance on the moving block shows that the tension in each of the parts of the rope must be "W/p." This means the input force on the rope is "T"="W/p." Thus, the block and tackle reduces the input force by the factor "p." The simplest theory of operation for a pulley system assumes that the pulleys and lines are weightless, and that there is no energy loss due to friction. It is also assumed that the lines do not stretch. In equilibrium, the
Rope-a-dope Rope-a-dope The rope-a-dope is a boxing fighting style commonly associated with Muhammad Ali in his 1974 Rumble in the Jungle match against George Foreman. In many competitive situations, rope-a-dope is used to describe strategies in which one contender lets their opponent fatigue themself by drawing non-injuring offensive actions. This then gives the contender an advantage towards the end of the competition or before, as the opponent becomes tired, allowing the contender to execute devastating offensive maneuvers and thereby win. The rope-a-dope is performed by a boxer assuming a protected stance (in Ali's classic pose, lying against the ropes, which allows