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Question
(a) What is the average useful power output of a person who does $6.00\times 10^{6}\textrm{ J}$ of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
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Final Answer
  1. $208\textrm{ W}$
  2. $141 \textrm{ s}$
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OpenStax College Physics Solution, Chapter 7, Problem 36 (Problems & Exercises) (1:48)

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