Pulley Experiment

The pulley lab experiment was different than the other robotics lab experiment we did, even though it used some of the same Legos. One of the Lego pieces that look like a crank was attached to a pulley that had weights on it. We hooked up out little Lego robot to the computer and made the pulley move, which was much faster than what I was expecting. The first time we pressed go, we did not know that we had to stop the pulley by operating the Lego robot, and it almost got caught in the crank because we did not stop it. After we figured out how to work the robot and pulley, we had to do two separate test runs.

For the first portion of our test, we changed the weight/mass that the pulley had to lift each of the four times that we ran the experiment. We did increments of 20mg each try, and kept a consistent power of 60. The results for the power used was always in the .23-.29 range. The acceleration was always between 31.457 and 42.461.

Screen Shot 2014-09-25 at 9.48.26 PM

 

 

 

 

The second portion of our test had a different power for each of the four tries, but we kept a consistent mass of 160mg.

Screen Shot 2014-09-25 at 9.48.40 PM

 

Graph 1

 *You may need to click on this chart to see all of the number clearly! Sorry for the tiny photo!

 

 

 

 

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