Answer:
1.82
Step-by-step explanation:
The mechanical advantage of a simple machine is the ratio between the output force (load) and the input force (effort).
For a perfect wedge (efficiency of 100%), the mechanical advantage is also given by:
![MA=(L)/(w)](https://img.qammunity.org/2021/formulas/physics/middle-school/7ik1v7yp7fizbycpawkv9v840emm6wku9p.png)
where:
L is the length of the slope
w is the width of the wedge
For the wedge in this problem, we have:
L = 5.1 cm is the slope length
w = 2.8 cm is the width
Therefore, the mechanical advantage is:
![MA=(5.1)/(2.8)=1.82](https://img.qammunity.org/2021/formulas/physics/middle-school/vzhy3ykop83c1siscg2xdi7hy7ma886ghz.png)