Main Question or Discussion Point
Hi I have a hard time undersanding the mechanical advantage of this pulley system (in the video below): I understand that when a person is holding you, then the mechanical advantage is 2, because 50% of the weight or Load is on the rope going from the harness to the top left anchor point, and the other 50% is transmitted to the person holding the rope. BUT If you hold the rope, then you only carry 1/3 or the weight. Does this mean that 2/3 of your weight is transmitted from the rope to the Top left anchor point and 1/3 of your weight is transmitted to your hands pulling the rope? I can't really visualize it and would appreciate some help.