I need help with the data analysis and conclusion sections of my
lab! We are supposed to show sample calculations, graph the modulus
of elasticity, and perform a regression of our data to determine
the experimental uncertainty.
I Need Help With The Data Analysis And Conclusion Sections Of My Lab We Are Supposed To Show Sample Calculations Graph 1 (120.93 KiB) Viewed 13 times
I Need Help With The Data Analysis And Conclusion Sections Of My Lab We Are Supposed To Show Sample Calculations Graph 2 (124.76 KiB) Viewed 13 times
Young's Modulus Lab Procedure 1. Attach the nominal 1kg hanging mass to the bottom of the wire and measure the length of the wire using a meter stick equipped with caliper jaws. This length is from the inside point of attachment at the top to the inside point of attachment at the bottom. 2. Examine the Young's Modulus apparatus and locate the leveling table. Check to see that the circular micrometer screw tip is positioned at the center of the anvil. 3. Carefully turn the micrometer screw until the table is level as shown by the spirit leveling bubble and record the circular micrometer reading. *** Note: one revolution of the disk (100 divisions) corresponds to 1mm on the vertical scale. 4. Now add a nominal 2 kg mass to the hanger and repeat step 3. Continue adding 2 kg masses (leveling and recording the micrometer reading after each 2 kg increment) until you have added 8 kg to the hanger. 5. Remove the 4-2 kg masses and the hanger from the wire and measure the thickness of the wire using the micrometer calipers. Data Table 1 diameter measurements change in length (mm) change in Fhanging mass (g) trial length (mm) (μm) 1 90.7500 n/a 1000.00 Initial Final 2 101.250 10.50 2020.30 0.625 0.620
Data Table 1 trial change in change in Fhanging mass (g) diameter measurements (um) length (mm) length (mm) 90.7500 n/a |1000.00 Initial Final 101.250 10.50 2020.30 0.625 0.620 112.000 10.75 2040.20 123.050 11.05 2045.60 134.600 11.55 2005.80 Analysis To complete the rest of the lab report, present your data, analyze your data, and draw any relevant conclusions. When presenting your data, make sure all relevant information is given-- a table (or tables) is (/are) necessary (properly formatted tables-titles, units etc.). In the Analysis section, show all relevant calculations and a properly analyzed graph is required (20% point deduction from your final grade if the results of your curve fit are not used in determining Young's Modulus). Conclusion Your conclusion should include a discussion of your results, systematic errors, and an estimate of the experimental uncertainty (expressed as a percentage). Be sure to include a comparison of the value for Youngs's Modulus obtained from the graph to the ratio of stress/strain. (Hint: discuss the importance the slope against the ratio) Comment on whether the values agree and if not, how the appartaus influenced this difference. (A comparison of your measured value to the accepted value is not necessary) INMAS
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