Which of the following equations for the efficiency of a machine is correct?
- Efficiency = \(\frac{\text{Velocity Ratio}}{\text{Mechanical Advantage}}\) x 100%
- Efficiency = \(\frac{input}{output}\) x 100%
- Efficiency = \(\frac{\text{load distance}}{\text{effort distance}}\) x 100%
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Efficiency = \(\frac{\text{Mechanical Advantage}}{\text{Velocity Ratio}}\) x 100%
The correct answer is: D
Explanation
EFFICIENCY is the ratio of useful work done by the machine to the total work put into the machine.