Lab Experiment 6 _ Torque _

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Houston Community College *

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1401

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Physics

Date

Dec 6, 2023

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docx

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12

Uploaded by Rayder1000

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Lab Experiment 6 : Torque Objective: To put the laws of angular motion to the test Equipment: ● Hanging mass ● Meter stick ● Rotatory motion sensor ● Torque apparatus ● Computer interface ● Beam balance Theory/Background: Think about a pulley with radius R and a non-zero moment of inertia, I. Predicting the angular acceleration upon the release of a hanging mass m from a string wound around the pulley allows us to make this prediction.
Examine the scenario in which the pulley has very little mass, but because of the attached rod and two tiny masses, the moment of inertia is not negligible. Radius of pulley (R) = 0.02393 m Distance between small masses: D Small masses have values: M1, and M2 Length of the road: L Mass of the rod: Mr
Procedure: Determine the mass values of the rod, mass 1 and mass 2, in addition to the rod's length (L). As shown in the demonstration, connect the apparatus. Apply a 50 gram mass. For various values of D, we measured the angular acceleration (alpha) multiple times. Before measuring D, we also made sure our apparatus was balanced by adjusting mass 1 and mass 2. Our masses were initially placed close to the rod's measured ends (D). As the computer interface records, let the mass descend and rotate the pulley. To determine the measured value of angular acceleration (alpha), use the computer interface. After moving the masses each by roughly 1 centimeter toward the center, adjust, and measure D. Measure the new angular acceleration (alpha) value using the
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computer interface. This final step should be repeated up to eight times in order to get the masses as close to the center as possible. Data/Calculations: First, we converted Cm to M, and g to Kg, and we calculated the inertia by using equation 2. Once we had the inertia for each point we plugged I into equation 1.In this case R was given already. After we had our value alpha we calculated the percentage error for all the points.
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Conclusion: We can infer from the percentage error that, while not quite as precise as the computer-generated angular acceleration, the angular acceleration derived from the moment of inertia is close. As can be observed in trial 8, our percent error is the highest at 74.8%, whereas the computer was expecting a lower value. On the other hand, trial 2's percentage error of 0.35% makes it evident that the computations were somewhat accurate. Human error in rounding or misreading a value during the conversion phase of the computation could have resulted in the percentage error. Furthermore, when computing the slope using a computer, human error may also happen when adding up the values. In the end, human error interfering with the data can lead to inaccurate results, and the law of angular motion is not always reliable when applied to a computer- calculated value.
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