4/5/17
lab #10
With this experiment we are trying to calculate our power output while we do various activities.
In order to calculate our power output we are using the equation power= mgh/t. In order to calculate our mass we estimated how much we weigh the height was calculated by measuring the distance from the floor to the top step of the stairs we were going up and we calculated our time using a stopwatch. We then used these measurement to calculate our power output.
To start this experiment we had to complete various tasks. My lab group started off by pulling a 5kg backpack a height of 4.342 m. We timed ourselves to see how long it would take us to do this. Then we timed each other to see how long it took us to walk and run up the stairs. We calculated the height by measuring one step and multiplying how many steps there are. After gathering this data we started calculating our power output.
1. Power pulling up a mass a certain height.
2. Power output walking up the stairs.
3. Power output running up the stairs.
4. A.
Power output of 1 and 2 including KE.
In order to do this we first had to calculate the vertical distance traveled when going up the stairs. Then we calculated the velocity which allowed us to solve for the KE.
Including the KE shows us that it does not make a big difference which is why it is negligible. For walking up the stairs the difference was of 0.316. For running up the stairs was the difference was of 2.235.
4B.
Number of stairs we would have to climb to to equal the power output of the microwave.
4C.
Number of steps we would have to climb to equal the amount of time it takes to rum a microwave for 6 minutes.
D 1-3.
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