If your actual mechanical advantage is 10 J and the theoretical is 40 J, what is your percent efficiency? Hint: % Efficiency = (Actual MA/Ideal MA) * 100
a. 400%
b. 25%
c. 4%
d. 0.25%
The correct answer is b. 25%.
To find the percent efficiency, we use the formula:
% Efficiency = (Actual MA/ Ideal MA) * 100
Given that the Actual MA is 10 J and the Ideal MA is 40 J:
% Efficiency = (10 J / 40 J) * 100 = 0.25 * 100 = 25%
So the answer is b. 25%.