How long will it take a 60kg man to climb a height of 22m if he expended energy at a rate of 0.25kW. [g = ms-2]
- 5.3s
- 34.5s
- 41.6s
-
52.8s
The correct answer is: D
Explanation
power = mgh0.25 x 103 = \(\frac {60 \times 10 \times 22}{t}\)
t = 52.8 sec