Pulley system, the massless and frictionless pulleys do not dissipate energy and allow for a change of direction of a rope that does not stretch or wear. In this case, a force balance on a free body that includes the load, "W", and "n" supporting sections of a rope with tension "T", yields: The ratio of the load to the input tension force is the mechanical advantage "MA" of the pulley system, Thus, the mechanical advantage of the system is equal to the number of sections of rope supporting the load. A belt and pulley system is characterised by two or
Rope-a-dope take punishment in the belly". Kalinsky told him: "Do what you do in a training session: Act like a dope on the ropes." Ali then replied: "So, you want me to be a rope-a-dope?" According to Angelo Dundee, Kalinsky told Ali: "Why don't you try something like that? Sort of a dope on the ropes, letting Foreman swing away but, like in the picture, hit nothing but air." The publicist John Condon popularized the phrase "rope-a-dope". The maneuver is most commonly associated with the match between Muhammad Ali and George Foreman, known as The Rumble in the Jungle. Foreman was