1. The ideal mechanical advantage (IMA) is the length of the incline divided by the vertical rise, which is called the rise up ratio. The mechanical advantage increases as the slope of the incline decreases, but then the load will have to be moved a greater distance.
IMA =L/h
= 9/1
= 9
Thus the IMA of the inclined plane is 9
2. The IMA of a lever (ignoring the internal friction) depends on the ratio of the length of the lever arm where the force is applied divided by the length of the lever arm that lifts the load.
IMA =Le/Lr
= 9/3
= 3
The IMA of the lever is therefore; 3