If the last pulley in a lifting system is attached to the anchor, what is it called?

In a lifting system, the last pulley that is connected to the anchor is referred to as a change of direction device. This term highlights its primary function, which is to alter the path of the rope or line being used in the system. When the last pulley is anchored, it effectively allows the operator to control and direct the load more efficiently without pulling straight up, which can complicate lifting operations.

The use of a change of direction device is critical in rescue scenarios or complex lifting tasks because it enables a safer and more manageable way to apply force in a preferred direction. This can significantly enhance accessibility and safety for emergency responders during rescue operations.

In contrast, the other options do not accurately represent what happens when the last pulley is connected to the anchor. For instance, mechanical advantage refers to the ratio of the output force to the input force in a system, while the anchor system pertains to the setup that provides a secure attachment point but does not specifically indicate the purpose of the last pulley. Load distribution device describes equipment designed to distribute weight evenly, but it does not specifically capture the change of direction function of the last pulley in this scenario.