How does the work done in walking compare to the work done in running? Explain why you would expect it to be this way.

All measurements should be done very carefully. Be sure to include units with all measurements and calculations.

⦁ Find the weight of yourself and the other person. This needs to be in newtons. If your scale weighs in pounds, convert the weight in pounds to newtons. You can easily find the conversion factor by searching the internet . Record the weights in the data table below. You are Walker 1 and Runner 1 – so same weight for both. The other person is Walker 2 and Runner 2.
⦁ Measure the height of the stairs by measuring the height of one step and counting the number of steps. You should measure the height of the step in centimeters. Then divide the measurement by 100 to get meters. Enter the height value and the number of stairs in the data table. Note that you put the same measurement into each of the four cells under “Height of Step”, and the same number of steps into each cell under “Number of Steps”.

⦁ Measure the time for each person to walk normally up the stairs. Record the times in seconds in the data table.

⦁ Measure the time for each person to run up the stairs . Record the times in seconds in the data table.

Weight Height of Step Number of Steps Time
Walker 1
Walker 2
Runner 1
Runner 2

Analysis

⦁ Calculate the total vertical height of the stairs in meters. Put your answer in the text box below:

⦁ Calculate the work done by each person in walking and running. In this case, the force would be the weight of the person and the distance would be the height of the stairs. Put your answers in the table below.

⦁ Calculate the power for each person in walking and running. Put your answers in the table below.

Work Power
Walker 1
Walker 2
Runner 1
Runner 2

Conclusions

⦁ How does the work done in walking compare to the work done in running? Explain why you would expect it to be this way.

⦁ How does the power used in walking compare to the power used in running? Explain why you would expect it to be this way.