A machine requires 1000J of work to raise a load of 500N through a vertical...
PHYSICS
JAMB 1992
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
- A. 80%
- B. 75%
- C. 50%
- D. 33%
Correct Answer: B. 75%
Explanation
\(\frac{500 \times 1.5}{100.0}\) x 100%
= 75%
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