Which of the following equations for the efficiency of a machine is correct?
-
A.
Efficiency = (frac{text{Velocity Ratio}}{text{Mechanical Advantage}}) x 100% -
B.
Efficiency = (frac{input}{output}) x 100% -
C.
Efficiency = (frac{text{load distance}}{text{effort distance}}) x 100% -
D.
Efficiency = (frac{text{Mechanical Advantage}}{text{Velocity Ratio}}) x 100%