Which of the following equations for the efficiency of a machine is correct?
PHYSICS
WAEC 2008
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%
Correct Answer: D. Efficiency = \(\frac{\text{Mechanical Advantage}}{\text{Velocity Ratio}}\) x 100%
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