Power Lab- Lower Body
Names: 1.________________2.__________________3.____________________4.___________________
Purpose: To find out whom in Mr. Foster’s ICPE classes has the most power in their legs.
Hypothesis: How many watts of power do you have in your legs? (Each person must make a hypothesis!)
1.___________________2.____________________3._________________4.___________________
Materials:
Paper, Stopwatch, Pencil, Meter Stick and Calculator
Procedure:
1. Measure the height of the stairs. (There are several different ways to do this)
2. Walk up 2 flights of stairs.
3. Record the time for walking up the stairs in data table.
4. Run up the stairs.
5. Record the time for running up the stairs in the data table.
6. Repeat steps 5 and 6 for another trial.
7. Calculate the amount of work you did walking up the stairs.
8. Calculate the amount of power you had walking up the stairs.
9. Calculate the amount of work you did running up the stairs.
10. Calculate the amount of power you had running up the stairs.
Data:
Your weights (force) in Newtons = 1._______N 2._______N 3._________N 4.________N
The height of one flight of stairs =_____________________m = d (distance in meters)
Trial #
Name 1:
Name 2:
Name 3:
Name 4:
_______________ ______________ ______________ ______________
Walk time
(s)
Work done- walk (J)
Power- walk
(w)
1-run
(s)
2-run
(s)
Avg. Run time
(s)
Work done- run (J)
Avg. Power- running
(w)
Calculations:
W = fd (Work (J) = force (N) X distance (m))
P = w/t (Power = work (J)  time (s))
Your weight in Newtons = Weight in lbs / .2248
Analysis:
Refer to the data you collected to answer the questions below.
1. Did you do more work walking or running up the stairs? (Same for each person!)
__________________________________________________________________________________________
2. Did you have more power walking or running up the stairs? (Same for each person!)
__________________________________________________________________________________________
3. Write a complete sentence in you own words explaining the difference between work and power.
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________