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2048L

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Physics

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Dec 6, 2023

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pdf

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6

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PHY2048L/PHY2053L – General Physics Lab Submission Form SUBMITTER: PARTICIPANTS: Results & Data Analysis GROUP #: Graph-1 Velocity vs. Time In the space below, insert a quality image of the velocity versus time graphs showing the first 5 line fits. Graph-2 Histogram. In the space below, insert a quality image of your histogram showing the "statistics".
Error Analysis 2 Table-1 Acceleration Values and Histogram Data In the space below, insert a quality image of a table of the acceleration values (sorted) and histogram data. 1. How do you account for the fact that the values of the slope were nearly the same, whereas the values of the intercept were much more variable? 2. It is highly unlikely that you obtained identical values of the slope of the best-fit line to the velocity vs. time graph for each of your trials. How might you best report a single value for the acceleration due to gravity, a g , based on your results? Perform the necessary calculation and show your results in the space provided below.
Adapted from Physics with Vernier 5 3. How does your experimental value compare to the generally accepted value (9.81 m/s 2 )? One way to respond to this question is to determine the percent difference between the value you reported and the generally accepted value (Show your calculations). Note that if you simplify your units of slope, they will match those of the reported values of a g . 4. Determine the average value of a g for all 4 5 trials. How does this compare with the value you obtained for the first 5 trials? In which average do you have greater confidence? Why?
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Error Analysis Adapted from Physics with Vernier 6 9. In what range (minimum to maximum) do the middle 2/3 of your values fall? In what range do roughly 90% of the values closest to your average fall? 10. One way to report the precision of your values is to take half the difference between the minimum and maximum values and use this result as the uncertainty in the measurement. Determine the uncertainty in this way for each range of values you determined in Step 9. Uncertainty of the Middle 2/3: Uncertainty of the 90% of the values closest to your average: 11. In what place (tenths, hundreds, thousandths) does the uncertainty begin to appear? Discuss whether it is reasonable to report values in your average beyond the place in which the uncertainty begins to appear. Round your average value of ag to the appropriate number of digits and report that value plus the uncertainty.
Error Analysis Adapted from Physics with Vernier 7 12. Standard Deviation When you obtained the statistics for your histogram, you may have noticed that, in addition to minimum and maximum values, and the mean and median, the standard deviation (std. dev.) was also provided. Do a web search for standard deviation. From the definition, what fraction of measurements fall within ± 1 σ of the mean; what fraction would fall within ± 2 σ of the mean? 13. Write a brief explanation describing what standard deviation measures. 14. Write a brief explanation describing what RMSE tells you 15. Systematic Error Suppose that the clock on the interface ran slow, say at 90% of its normal rate. How would that change the value you obtained for a g ? Would performing more trials fix this problem? Explain.
Car on a Ramp J Gibert/MDC West-2020 6 CONCLUSIONS (No more than 300 0 characters ) Enter the date below, then s ave this document as PDF , and submit it for grading.
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