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Unformatted text preview: Laboratory 2: Motion with Unifo Physics 127/141  Wint Replace with both your names, current date and section number Please name your file uniqname.xlsx, and save one copy for each student Experiment 1: Tilted Air Track Graph for 1" height Graph for 2" height (Problem 2.8) Describe what is happening during each part of a single glider b which the glider is moving with a positive velocity? A negative velocity? Zero acceleration is positive? Negative? (Problem 2.9) Would the following sources of error cause your experimental m effect? Write a onesentence explanation after each of your answers. (a) We're actually on the moon. (b) The blocks are thinner than they should be. (c) The distance between the support feet is 139 cm instead of 140 cm. (d) The track is not perfectly frictionless. (e) You fit a smaller bounce, rather than a larger bounce, on LoggerPro. Experiment 2: Pulleys and Level Air Track Graph for 10 g hanging mass Graph for 20 g hanging mass (Problem 2.10) Would the following sources of error cause your experimental to go up or down, or will they have no effect? Write a onesentence explanatio (a) We're actually on Jupiter. (b) The glider's mass is slightly greater than measured. (c) The string attached to the glider is at an angle slightly off from the horizontal. (d) The glider experiences air resistance as it moves. (e) You start the glider in the middle of the track rather than at the end. Experiment 3: Model Fitting and Statistics Expt. 1 (1") Expt. 1 (2") Your data Other groups' data Mean Number of trials Standard deviation Error of the mean 95% C.I. (lower bound) 95% C.I. (upper bound) Theoretical value (Problem 2.12) Which of the four experimental methods used here appears to choice. (Problem 2.11) For each of the four data sets: is the difference between the cla significant at the 95% confidence level (meaning that the 95% confidence inter value)? What does your result mean, practically speaking? 2: Motion with Uniform Acceleration ysics 127/141  Winter 2010 Height of block (in) Track length (in) Glider acceleration (experimen Glider acceleration (theory) for 1" height Height of block (in) Track length (in) for 2" height Glider acceleration (experimen Glider acceleration (theory) each part of a single glider bounce. Specifically, what are the time intervals during y? A negative velocity? Zero velocity? What are the time intervals during which its or cause your experimental measurement of a to go up or down, or will they have no ch of your answers. Up, down, or no effect? Explanation Hanging mass, m (kg) Glider mass, M (kg) 0 g hanging mass Glider acceleration (experimen Glider acceleration (theory) Hanging mass, m (kg) Glider mass, M (kg) 0 g hanging mass Glider acceleration (experimen Glider acceleration (theory) ror cause your experimental measurement of [the magnitude of] the acceleration, a, te a onesentence explanation after each of your answers. Up, down, or no effect? Explanation Expt. 2 (10g) Expt. 2 (20g) Units m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 m/s2 (none) m/s2 m/s2 m/s2 m/s2 m/s2 he difference between the class mean and the theoretical value of a statistically that the 95% confidence interval for the class mean does not include the theoretical peaking? ethods used here appears to yield the most reproducible results? Justify your ight of block (in) ack length (in) ider acceleration (experiment) ider acceleration (theory) ight of block (in) ack length (in) ider acceleration (experiment) ider acceleration (theory) nging mass, m (kg) ider mass, M (kg) ider acceleration (experiment) ider acceleration (theory) nging mass, m (kg) ider mass, M (kg) ider acceleration (experiment) ider acceleration (theory) ...
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This note was uploaded on 05/16/2010 for the course PHYSICS PHYS taught by Professor Tony during the Spring '07 term at University of MichiganDearborn.
 Spring '07
 Tony
 Current

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