A machine of efficiency 8% is used to raise a body of mass 75kg through
PHYSICS
WAEC 2000
A machine of efficiency 8% is used to raise a body of mass 75kg through a vertical height of 3m in 30s. Calculate the power input. (g = 10ms-2)
- A. 9.4W
- B. 60.0W
- C. 75.0W
- D. 93.8W
Correct Answer: D. 93.8W
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