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# Work and Power in Climbing a Flight of Stairs

Work & Power - Involves you walking up a flight of stairs and recording your time via a stopwatch or chronograph.You will be asked to make measurements and calculations for the total time to walk the flight of stairs (at least 7 steps) and the vertical height of the stairs from the bottom to the top.
o Estimate your mass in kg (Hint: 1 kg (mass) = 2.2 pounds (weight)).
o You should approach the bottom step of the stairs with a steady speed.
o You are to start the time as you reach the first stair and stop the clock when you reach the top.
Observations and Data:
o Calculate the work and power for you to climb the flight of stairs.
o Work (you) = _______; power (you) = ________
o Calculate your power in kilowatts: P(kW) = _______.
Application: o Your local electric company supplies you with 1 kW of power for 1 hour for 8 cents. Assume that you could climb these stairs continuously for 1 hour. How much money would this climb be worth? \$______________.

#### Solution Preview

Mass = m = 60 kg

g = 9.8 m/s^2

Let the number of steps = 100

Height of each step = 15 cm = 0.15 m

Total height ...

#### Solution Summary

All the parts of this question have been solved step-by-step.

\$2.19