Present Example 13.6 in Chapter 13 using the format discussed in Section 4.3. Divide the...

Present Example 13.6 in Chapter 13 using the format discussed in Section 4.3. Divide the example problem into “Given,” “Find,” and “Solution” sections.

Example 13.6:

Determine the power required to move 30 people, with an average mass of 61 kg (135 lb_m) per person, between two floors of a building, a vertical distance of 5 m (16 ft) in 2 s.

The required power is determined by

The minimum energy requirement for this task is equivalent to providing electricity to fifteen 100-W light bulbs for 1 minute (90,000 J). Next time you feel lazy and are thinking about taking the elevator to go up one floor, reconsider and think about the total amount of energy that could be saved if people would take the stairs instead of taking the elevator to go up one floor. As an example, if 1 million people decided to take the stairs on a daily basis, the minimum amount of energy saved during a year, based on an estimate of 220 working days in a year, would be