Answer:
Efficiency = 80%
Explanation:
Given the following data;
Mechanical advantage (MA) = 4
Ideal mechanical advantage (IMA) = 5
To find the efficiency of the machine;
Mathematically, the efficiency of a machine is given by the formula;
[tex] Efficiency = \frac {MA}{IMA} * 100 [/tex]
Substituting into the formula, we have;
[tex] Efficiency = \frac {4}{5} * 100 [/tex]
[tex] Efficiency = 0.8 * 100 [/tex]
Efficiency = 80%
