What is some information if I combine the fixed pulley and movable pulley?

Combining a fixed pulley and a movable pulley creates a block and tackle system, which increases mechanical advantage and allows for easier lifting of heavy loads. The fixed pulley changes the direction of the force applied, while the movable pulley reduces the amount of force needed to lift an object by distributing the weight across multiple segments of rope. This setup is widely used in various applications, such as construction and sailing, to enhance efficiency and reduce the effort required to lift heavy items.