What is an inclined plane and how does it help ... - JSS2 Basic technology Power and Machines Question

An inclined plane is a flat surface tilted at an angle, used to raise or lower objects with less effort than lifting them vertically. It reduces the amount of force needed by increasing the distance over which the force is applied. For example, pushing a heavy box up a ramp requires less force than lifting it straight up, though the force must be applied over a longer distance. This simple machine converts a difficult lifting task into an easier pushing or pulling task. Inclined planes are commonly used in loading ramps and slides.