An inclined plane is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. If viewed from the side, an inclined plane looks like a triangle. The surface of an inclined plane is at an angle against the horizontal surface. An inclined plane is often used in real life applications to make moving heavy or delicate objects easier. When moving an object up a plane, it requires a consistent force to keep it moving. This force, however, is much lower than having to lift the object all at once. When moving an object down an inclined plane, like a slide, the object will fall slower than if simply dropped. This becomes a much safer way to lower heavier objects. The cost of using an inclined plane is that the distance that must be traveled is further than that of lifting or dropping the object. Inclined planes make work easier by spreading the work out over a longer distance. As a result, the inclined plane became a simple tool used to maneuver heavy objects rather than lifting or lowering them.
Many other tools are based on the principles of the inclined pane using a triangular shaped object to reduce the force necessary to complete the work. Examples of these tools are the ax, wedge and chisel.
The first recorded use of inclined planes in construction happened around 2600 B.C. when ramps were used in the construction of the Great Pyramids. Later it was discovered that a frictionless ramp was even more mechanically advantageous. Also discovered was the energy exerted was lesser as the slope was lower as opposed to a higher degree of slope. Together with these variables, the ramp has continued to be the most common and most popular inclined planes in use today.