What effort will a machine of efficiency 90% apply to a load of 180N if
PHYSICS
JAMB 2018
What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?
- A. 100N
- B. 90N
- C. 80N
- D. 120N
Correct Answer: A. 100N
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