What is the expected efficiency of an ideal inclined plane?

An ideal inclined plane is a simple machine that allows a load to be moved up to a height with less force required than lifting it vertically. The efficiency of a machine is calculated by comparing the output work to the input work. In the case of an ideal inclined plane, if it operates without any friction or other losses, it can transmit all the input work into output work, leading to a scenario where the efficiency is considered to be 100%.

In real-world situations, factors such as friction, material deformation, or energy lost in other forms (like sound or heat) can reduce the efficiency. However, in theoretical considerations, such as with an ideal inclined plane, those losses are ignored, meaning that all the work input into the system is effectively transformed into useful work output. Therefore, the expected efficiency of an ideal inclined plane is indeed 100% or 1.