Change the chapter
(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.)
Question by OpenStax is licensed under CC BY 4.0.
Final Answer
  1. $208\textrm{ W}$
  2. $141 \textrm{ s}$
Solution Video

OpenStax College Physics Solution, Chapter 7, Problem 36 (Problems & Exercises) (1:48)

Sign up to view this solution video!

View sample solution

Calculator Screenshots

OpenStax College Physics, Chapter 7, Problem 36 (PE) calculator screenshot 1