What is a pulley system using pulleys to increase mechanical advantages?

A pulley system is a set of wheels and ropes designed to lift heavy loads with less effort. By arranging multiple pulleys in a block-and-tackle configuration, the system increases mechanical advantage, allowing a user to lift a weight by applying a smaller force over a longer distance. This setup reduces the effort needed, making it easier to move heavy objects vertically. The more pulleys used, the greater the mechanical advantage, but this also requires pulling the rope a greater length.