Presentation on theme: "Pendulum Lab – Model Data Tables:. Copy/Paste these formulas in all cells to calculate the average period for each trial."— Presentation transcript:
Pendulum Lab – Model Data Tables:
Copy/Paste these formulas in all cells to calculate the average period for each trial.
Pendulum Lab – Sorted and Average Data Tables: Sort the data by Amplitude as shown here. In other words, group all of the data taken at 5 degrees together, group all taken at 10 degrees, etc.
Pendulum Lab – Sorted and Average Data Tables: Average the two trials at each amplitude and consolidate the data…do this for both Procedure 1 and Procedure 2.
Pendulum Lab – Sorted and Average Data Tables: Convert the Procedure 1 data (after it has been averaged) into a chart like the one shown below.
Pendulum Lab – Sorted and Average Data Tables: FileName: EngPrac_Period_LastNames.xlsx Example: EngPract_7_Scott.xlsx
Pendulum Lab – Sorted and Average Data Tables: We set out to prove that the period, T, of a pendulum was given by the equation: and that mass and amplitude have no effect on T. In addition, we also want to determine the constant, C. With the data we took last week, we have the information we need to do this!
Pendulum Lab – Sorted and Average Data Tables: This equation, is the same thing as saying that, If thats true, then… If we plot Log T vs Log l, then the slope of the line should be the exponent, a. What do we expect that to be?
Pendulum Lab – Sorted and Average Data Tables: Log Rules: 1) 2) log(mn) = log(m) + log(n) 3) log( m / n ) = log(m) – log(n) 4) log(m n ) = n · log(m)
Pendulum Laboratory Report 1.Format: 20% 2.Descriptions and lab summaries:20% 3.Analysis of results: 20% 4.Error analysis: 20% 5.Questions answered20% Sample Lab Report: (Only difference is that you need to include data plots in the body of your report, not just as an appendix.) Grading Rubric:
Pendulum Laboratory Report 1.Data Tables included at end of report as an appendix: a)Procedure 1 raw, average data b)Procedure 2 raw, averaged data c)Procedure 2 sorted data
Pendulum Laboratory Report 2.Data Plots included in body of report a)scatter-plot of T vs. L for all amplitudes – 4 plots on one graph using four series (a=5, 10, 15, 20 degrees) b)scatter-plot of Log T vs. Log L for the best data plot in #1 above c)T vs. L points for m = 1, 2, 3, or another appropriate plot
Pendulum Laboratory Report 3.Write-up a)Typed, 12 pt font, 1.5 spacing b)3-5 pages long, not including appendix of data tables c)Separate report into sections d)Answer #1-5, making sure to cite all sources used a)Describe the purpose of experiment b)Describe the experiment and method c)Describe the results Include data plots and a description of what they tell you – based off objectives d)Describe possible errors that led your results to be different from the theoretical values
Pendulum Laboratory Report 3. Write-up (continued) e)How do your graphs and results support or refute the theory of a simple pendulum? Your purpose here is to discuss, in writing, what evidence there is that indicates (or does not indicate) that the theory is correct. Do not do any calculations for this question. Instead, refer to the shapes, features, and types of relations and equations shown on the graph(s). Be sure to discuss each part of the lab.
Pendulum Laboratory Report 1.Wednesday 10/6 – Intro/Procedure 2.Thursday 10/7 – Results 3.Monday 10/11 – Discussion/Conclusion 4.Monday 10/18 – Final Lab Report 5.Tuesday and Wednesday 10/19,20 UNIT 1 TEST Due Dates: