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Unformatted text preview: /35 Winter Quarter 2008 Winter Quarter 2008 Experiment: Measurement And Uncertainty Your name: Anish Dundoo Partner: Lauren Kolegraff Performed on: 1/14/08 TA: Hyundeok Song Section number: 218 Promptness % (100 means it was on time): 100 Additional Scores (+)/Penalties (-): Abstract (4) The Single Swing Time (SST) and the Nine Swing Time (NST) were calculated using a stopwatch in order to figure out the average time per swing. The Histogram showed that the nine-swing time comprised of greater accuracy as compared to the single swing time. This states that physical measurements are never precise and this can be demonstrated by conducting different experiments. We measured the length of the pendulum from the top, middle and bottom and they came out to be 48cm, 50.2cm and 53.2cm respectively. The average of this summed upto 50.4cm. The value of 49.28 0.35cm was calculated which almost the measured value of 50.4cm was. We found the average time per swing (T) of both with SST being 1.327s and NST being 1.409s. The significance of these results is to prove that following a procedure for obtaining data can be more accurate than just obtaining data through human perception. We have verified the length of the pendulum by keeping the force of gravity constant in equation(2) and used it along with the time period of the pendulum and this helped obtain the uncertainty of the length measured. From the uncertainty of length, which is also the standard deviation, the standard error was calculated (.005s) and the standard error of the length resulted in (0.35cm). With this we could finally find out the error of the physical measurements that we had made at the beginning of the experiment by using a stopwatch. We learn through this experiment that more complex the experiment is with better equipment and technology, the results we obtain will be more and more accurate. be more and more accurate....
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