What is the use of a pulley on a incline plane?

A pulley on an inclined plane is used to change the direction of force applied to lift or move objects up the slope. By connecting a rope or cable through the pulley, it reduces the effort needed to lift heavy loads, allowing for easier movement along the incline. This setup can also help in distributing the weight more evenly, making it safer and more efficient to transport materials. Overall, it enhances mechanical advantage and improves the effectiveness of lifting operations.