lab report 5

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Florida Atlantic University *

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2048L

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Physics

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Apr 3, 2024

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pdf

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12

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Experiment 5: The Atwood’s Machine Student name: Jordyn Kaliszewski Pre-lab section: 1) Introduction: Explain the theory behind this experiment in a paragraph between 150 and 250 words. (2 points) The concept behind this experiment is that we have two masses slung over a pulley linked by a string (negligible mass). With this in mind, the two masses have the same magnitude and acceleration, the heavier mass going down and the lighter mass moving up. Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation. A free-body diagram is a special example of the vector diagrams. Each force arrow in the diagram is labeled to indicate the exact type of force. It is generally customary in a free-body diagram to represent the object by a box and to draw the force arrow from the center of the box outward in the direction that the force is acting [Drawing Free-Body Diagrams]. For a free-body diagram, you must draw each of the bodies separately, detached from the system, and draw all forces acting on it to find resultant force, and resultant acceleration. Source: https://www.physicsclassroom.com/class/newtlaws/Lesson-2/Drawing-Free-Body-Diagrams 2) Hypothesis: In an If /Then statement, highlight the purpose of the experiment. (1 points) If we apply Newton’s Second Law then we can tell that the acceleration is directly proportional to the net force that’s acting upon the object, and it is inversely proportional to the mass of said object.
Post-lab section: 3) Discussion: In a paragraph between 100 and 150 words, explain what you learned. What conclusion can you draw from the results of this lab assignment? (2 points) From this experiment I learned about the Atwood’s Machine . From using the pulley system, I learned how to calculate acceleration of a free-falling object. For these calculations I was able to use the formula 𝑎 = (? 1 −? 2 ) ? 1 +? 2 × 𝑔 . After applying this formula, I could then use the formula |𝑒𝑥𝑝−𝑐𝑎?𝑐| (𝑒𝑥𝑝+𝑐𝑎𝑙𝑐) 2 × 100% to calculate the percentage difference between the experimental acceleration and the calculated acceleration. From the results I can conclude that the acceleration is inversely proportional to the mass of the item and directly proportional to the net force acting on it. When we changed the mass of one of the objects on the pulley (and the mass differences were greater), the percentage difference decreased. 4) Conclusion: In one sentence, compare the results of the experiment with your Hypothesis. Why? (1 point) My hypothesis was proven by this experiment, because after performing the experiment we were able to conclude that changing the mass of the objects affects the net force.
5) Raw Data: Attach an image of the lab manual pages containing the signed raw data tables, any charts, or plot image and computer printouts when applicable here. (1 points)
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6) Data Analysis: Attach an image of the lab manual pages containing tables with final calculated values here. (4 points)
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7) Calculations: Attach an image of your calculation pages here. (2 points) Calculation pages must include the following:
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8) End of Experiment Questions: Attach an image of the lab manual pages containing your responses to the end of experiment questions here.
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