Procedure: The lab consisted of two different types of activities. One of them was walking/running up a flight of stairs and the second one was pulling a weighted backpack using a pulley system.
One of the experiments that we did was pulling up a weighted backpack using a pulley system and checking the time it took us to pull up the backpack as shown below. We recorded the time and the mass of the backpack.
The second experiment was us running up the stairs and walking up the stairs and recording the time it took for us to go up those steps. We recorded the time it took us to climb those steps.
Data; The data we recorded included the mass of the backpack, the times it took for us to do the activities, and we also needed our weight which we got during our own time and we also had to acquire the height of what we were lifting.
Calculations: In order to find the power, we needed the time, height and the weight of the different objects we had to elevate whether it was the backpack or our bodies.
Below is the way I calculated the power of lifting myself up the stairs. First I got my weight and then I divided that over the time it took to get the power.
The second calculation below was for lifting the backpacks. It was the same process as the one before. I got the power to be 49.6 Watts.
Summary; Overall, the lab was successful because we were able to calculate power out of the measure variables we got. By knowing that P = W / t we were able to get the results we needed. The results were that walking up the stars requires more power than lifting something up the same amount of height.
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