What is the main function of an inclined plane?

The main function of an inclined plane is to facilitate lifting by providing a gradual slope for moving objects upward. This simple machine reduces the amount of force needed to lift an object to a higher elevation by allowing it to be moved along a slope rather than being lifted straight up.

When using an inclined plane, the weight of the object can be effectively countered by analyzing the angle of the slope, which means that less force is required to raise the object over the same vertical distance compared to lifting it vertically. This characteristic makes the inclined plane a practical tool for tasks such as loading freight onto trucks or moving heavy items onto a higher platform.

In contrast to the other choices, while friction can play a role in movement, it is not the primary function of an inclined plane. The inclined plane does not inherently increase the speed of moving objects; rather, its design focuses on easing the effort needed to lift and move objects. Its function is not to hold items in place, which is the role of other tools or machines.