what is the mechanical advantage of the class 1 lever. input=effort output=load. 45N effort down and 90 N load up.
A.2
B.4050
C.67.5
D.12.5
E..5
The mechanical advantage of a lever can be calculated by dividing the load by the effort.
In this case, the load is 90 N and the effort is 45 N.
Therefore, the mechanical advantage of the class 1 lever is:
90 N / 45 N = 2
Therefore, the correct answer is A. 2.