Two men with weights in the ratio 5: 3 run up a staircase (of same height) in times in the ratio 11:9. The ratio of power of first to that of second is
Correct answer: C. 15/11
- A. 11/15
- B. 11/9
- C. 15/11
- D. 9/11
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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