Answer:
IMA = 8
Explanation:
Given the following data:
Length of plank = 160cm
Length of resistance = 20cm
To find the ideal mechanical advantage (IMA);
[tex] IMA= \frac {length \; of \; effort}{length \; of \; resistance} [/tex]
[tex] IMA= \frac {160}{20} [/tex]
IMA = 8
