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
4%
b
25%
c
400%
d
0.25%
d) 0.25%
To find the percent efficiency, we can use the formula:
% Efficiency = (Actual MA/ Ideal MA) * 100
Given that the actual mechanical advantage is 10 J and the theoretical mechanical advantage is 40 J, we can substitute these values into the formula:
% Efficiency = (10/ 40) * 100 = 0.25 * 100 = 25%
Therefore, the correct answer is b) 25%.
To find the percent efficiency, we need to calculate the ratio of the actual mechanical advantage (MA) to the ideal mechanical advantage (MA).
The formula for percent efficiency is:
% Efficiency = (Actual MA / Ideal MA) * 100
Given that the actual MA is 10 J and the theoretical (ideal) MA is 40 J, we can plug these values into the formula:
% Efficiency = (10 J / 40 J) * 100
Simplifying the expression:
% Efficiency = (0.25) * 100
% Efficiency = 25
Therefore, the percent efficiency is 25%.
So, the correct option is b) 25%.