Quick and simple Power problem

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In summary, the task was to find the minimum power output used by a 68.8kg athlete to climb a vertical distance of 4.74m in 8.70s during a rope climb. The formula used was P = mgh/t, resulting in an answer of 367 W. However, this was considered incorrect and it was suggested to use g=9.81 to round the answer to 368 W. The question of whether this is the correct approach was also raised.
  • #1
opqpop
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1. In the rope climb, a 68.8kg athlete climbs a vertical distance of 4.74m in 8.70s. What minimum power output was used to accomplish this feat?



2. Average Power = Work / time



3. P = mgh/t = 367 W, which is apparently the wrong answer (this is an online course where you input the answer and they tell you if it's correct). I also tried -367W but that doesn't work either. Perhaps this has something to do with the problem asking for minimum power output? Could someone help me out?
 
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  • #2
If you use g=9.81 the answer should round to 368 W
 
  • #3
But is this the right way to do this problem?
 
  • #4
opqpop said:
But is this the right way to do this problem?

Yes. It's probably a rounding problem as kamerling pointed out.
 

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