What is the IMA of a door stop expressed in terms of lengths?

The term "Ideal Mechanical Advantage" (IMA) is a measure of the efficiency of a machine, which in this case is the door stop. The IMA can be calculated using the formula that compares the height of the object to the length of its inclined surface.

In the context of a door stop, it functions through the action of inclined planes. The height is the distance from the base to the top of the door stop, while the length refers to the distance along the inclined surface upon which the door will rest. Therefore, the correct answer emphasizes the relationship between these two measurements: the height of the door stop and the length of the inclined surface.

This ratio provides a clear understanding of how effectively the door stop can exert force or lift a door, which is the essence of mechanical advantage in simple machines.