The ideal mechanical advantage of a slope is given by the ratio between the output load, which is simply the weight of the object (

), and the input force

applied to move the object along the slope:

The energy conservation law states that the potential energy of the object when it reaches the final height h is equal to the work done to move the object along the distance of the slope

, i.e.

From this we find

Therefore, we can substitute this into the formula of the ideal mechanical advantage and calculate its value:
