Simple Pendulum Lab Report

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Troy University, Troy *

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101

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Physics

Date

Feb 20, 2024

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docx

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Uploaded by AdmiralGalaxy13332

Madeline Farmer, Mattie Havas, Kylee Moore, Morgan Bundy Physics Lab 1 TSBB – Tuesday 2pm Simple Pendulum Lab Report Simple Pendulum Lab Report In this lab, we tested the relationship of independent and dependent variables relative to our pendulum. The independent variables include the mass (grams), the length of the string (centimeters), and our angular displacement (degrees). Our dependent variable was the period of oscillation (seconds). By changing one independent variable at a time, while keeping the other independent variables constant, we can see the relationship each independent variable had on the period of oscillation (the dependent variable). We began by gathering an initial dataset, with our pendulum bob’s mass being 22.9 g, our pendulum string’s length being 50 cm, and our initial displacement being 10°. Using these variables and testing our pendulum four times, we got an average of 1.13 s for the period of oscillation. First, we tested if changing the angular displacement would influence the period of oscillation. We increased our angular displacement by 5° each trial run. Our controlled variables for this trial were the length of the string, 50 cm, and the mass of the bob, 22.9 g. From our data set, we determined that there was no relationship between changing our angular displacement and the period of oscillation. Next, we tested if changing the bob's mass would influence the oscillation period. We used multiple bobs of different masses given to us in the lab; these masses ranged from 2.0 g to 91.5 g. Our controlled variables for this trial were the length of the string, 50 cm, and the angular displacement, 10°. From our data set, we determined that as the mass increased, we saw that the period of oscillation very slightly increased as well. – is this enough to tell there is a relationship between the 2? Lastly, we tested if changing the length of the string would influence the period of oscillation. We increased our string length by 25 cm for 8 different trial runs, having a range from 75 cm to 250 cm. Our controlled variables from this trial were the angular displacement, 10°, and the mass of the bob, 22.9 g. From our data set, we determined that as you increase the length of the pendulum string, the period of oscillation also increases. Further, we linearized the graph by squaring the length of the string (x-values) to get a best fit line. Throughout our trials, we worked diligently to reduce our sources of error. To do this, we kept the same person timing our period of oscillation. We also kept the same person dropping our bob, tying the string to the pendulum, and cutting our length of string. After gathering all our data, we calculated that our percent error was ___. CALCULATE % ERROR OF ACCELERATION DUE TO GRAVITY?? How to linearize our other graphs? (if needed)

Madeline Farmer, Mattie Havas, Kylee Moore, Morgan Bundy Physics Lab 1 TSBB – Tuesday 2pm Simple Pendulum Lab Report 5 10 15 20 25 30 35 40 45 50 55 0.95 1 1.05 1.1 1.15 1.2 1.25 1.3 1.35 Period of Oscilation with Changing Displacement Angle of Displacement (Degrees) Period of Oscilation (Seconds)

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