Answer:
Option D
MA=5
Explanation:
Mechanical advantage is the the ratio of the output force to the input force hence
[tex]MA=\frac {Effort arm length}{Load arm length}[/tex]
Substituting 15 inches for the effort arm length and 3 inches for the load arm length then we obtain the mechanical advantage as
[tex]MA=\frac {15}{3}=5[/tex]
