Data: Height of bleachers 10 feet Your weight Calculations: 1. Find your work, use Work (J) = weight (N) x height (m) wxh Nork= 110 x 3.05 = 335.5J 2. Find your power, use Power (W) = work (J)/ time (s) Power = work 335.5 =47.9W time 3. Find your horsepower, use horsepower = watts/746 110 Time 7Sec

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HORSEPOWER LAB
Name
In this lab you are going to calculate the work you do in climbing bleachers and the power you put out. Most
people can maintain about 100 watts of power for about a minute.
Procedure:
1. Measure the vertical height of the bleachers by a method of your choice. Record below
2. Determine your weight in Newtons. Record below.
3. Time how long it takes you to run up the bleachers, time to the nearest .1 of second. Record below
Data:
Height of bleachers
10 feet
Your weight
Calculations:
1. Find your work, use Work (J) = weight (N) x height (m)
wxh
work=
110 x 3.05
= 335.5J
2. Find your power, use Power (W) = work (J)/ time (s)
Power =
35.5=47.9W
work
time
3. Find your horsepower, use horsepower = watts / 746
P= 47.9 =0.064 horsepower
0942
4. Describe how you measured the vertical height of the bleachers.
llo
Hr
Time
6. Why is it more difficult to climb stairs as opposed to walking on level ground?
7 Sec
5. The answer for #3 is probably your maximum horsepower, unless you just strolled up the stairs. Explain if
your value would be higher or lower if you ran up the stairs for an hour and why.
7. Suppose there was a very light person that runs up quickly, and a very big person that runs up slower. Who
would have the most power? Explain your answer using the work and power equations above.
Transcribed Image Text:HORSEPOWER LAB Name In this lab you are going to calculate the work you do in climbing bleachers and the power you put out. Most people can maintain about 100 watts of power for about a minute. Procedure: 1. Measure the vertical height of the bleachers by a method of your choice. Record below 2. Determine your weight in Newtons. Record below. 3. Time how long it takes you to run up the bleachers, time to the nearest .1 of second. Record below Data: Height of bleachers 10 feet Your weight Calculations: 1. Find your work, use Work (J) = weight (N) x height (m) wxh work= 110 x 3.05 = 335.5J 2. Find your power, use Power (W) = work (J)/ time (s) Power = 35.5=47.9W work time 3. Find your horsepower, use horsepower = watts / 746 P= 47.9 =0.064 horsepower 0942 4. Describe how you measured the vertical height of the bleachers. llo Hr Time 6. Why is it more difficult to climb stairs as opposed to walking on level ground? 7 Sec 5. The answer for #3 is probably your maximum horsepower, unless you just strolled up the stairs. Explain if your value would be higher or lower if you ran up the stairs for an hour and why. 7. Suppose there was a very light person that runs up quickly, and a very big person that runs up slower. Who would have the most power? Explain your answer using the work and power equations above.
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