When a pulley is applied to lift a weight, it changes the force needed to lift the weight and the distance over which the force is applied, depending on the type of pulley system used.
In a typical single fixed pulley scenario:
- The force required to lift the weight decreases because the pulley changes the direction of the force, allowing you to lift with less effort.
- However, the distance you need to pull the rope increases because you must pull the rope longer than the distance the weight is lifted.
Thus, the correct response is:
The force decreases, while the distance increases.