I WONDER - What Is An Inclined Plane?

An inclined plane is a sloped surface that reduces the force needed to lift objects by allowing them to be pushed or pulled up the slope instead of being lifted vertically. This principle is used in ramps for loading goods or providing wheelchair access. The mechanical advantage of an inclined plane is determined by dividing the length of the incline by its vertical height.

In what scenarios might inclined planes be particularly useful?

How is the mechanical advantage of an inclined plane calculated?