What does pulley ratio mean?

Pulley ratio refers to the relationship between the diameters or the number of grooves of two or more pulleys connected by a belt or rope. It determines how much force is applied or the speed at which motion is transferred from one pulley to another. A higher pulley ratio generally means increased mechanical advantage, allowing a smaller input force to lift a larger load, while also affecting the speed of the output motion. Essentially, it plays a crucial role in the efficiency and effectiveness of mechanical systems utilizing pulleys.