PHY lab seven - PHY-122 Conservation of energy- Lab Seven...

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PHY-122 Conservation of energy- Lab Seven Joshua Manski Partners: Sandra Thoms Date: March 18 th 2008 SLN# 12909, Tuesday 6:40pm Zhi Guo
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Objectives : The purpose of this lab was for the student to observe a pendulum and explore the operations of it. The student was to take data from a pendulum’s path and use this data to investigate the conservation of mechanical energy laws. Experimental Procedure : For this lab the student needed to measure one cycle of a pendulum. To do this the student needed to measure 20 points in the pendulum’s path. This was done by using a electric inkjet that made a dot every 1/60 th of a second. To start the experiment we placed a piece of paper behind the pendulum so the inkjet had something to print on. Then we pulled the pendulum so it was just a few degrees below horizontal. Then we let the pendulum go. After a few oscillations we started the inkjet at the top of one swing and let it print until it was almost starting a new cycle. Then we took the paper that was printed on and picked a succession of 20 clear points to measure, these points were used in the results. Results : To analyze this information we had to split the data points into intervals. These intervals were from 1-3. 2-4, 3-5 … all the way to 19-20. The height of each interval was determined by the midpoints of the intervals. The ∆h and ∆∆r were determined by the error in the rulers which was .05cm. ∆r was determined as the distance between the first and last point in each intervals.
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PHY lab seven - PHY-122 Conservation of energy- Lab Seven...

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