When using a pulley system, the mechanical advantage allows you to lift a weight with less force than would be required without the pulley. However, achieving that advantage typically means you have to pull the rope over a greater distance.
In this scenario:
- Force Decreases: The amount of force required to lift the weight with the pulley is less than the 400 newtons needed to lift it directly.
- Distance Increases: While you apply this reduced force, you’ll have to pull the rope over a longer distance than the distance that the weight is lifted.
Therefore, the correct response is:
The force decreases, while the distance increases.