(a) What is the average useful power output of a person who does 6.00×106 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.)

Step-by-step solution Step 1 of 5 (a) The relation between the power , work and the time is, Step 2 of 5 As the time is in the time hours, the time taken by the person in second is Substitute for , for in the above equation. The average useful power output of the person is . Step 3 of 5 (b) Apply to the work energy theorem. The relation between the poProblem 36PE Problem (a) What is the average useful power output of a person who does 6.00×106 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.) wer , work and the time is,