angularaccel - Conclusion: Our Torque vs. Angular...

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Paul Gonzales Simple Harmonic Motion % uncertainty= uncertainty * 100 / slope DISK = 0.000282494* 100 /0.007225848= 3.909493895% RING = 0.000362354 *100/0.010006849= 3.621055696 % Error Analysis: The best fit value for the Moment of Inertia of the disk was .0072. This had an uncertainty of .00028 and a percent difference of 4.62% from our calculated value. This is a good percentage to have because it means that we were pretty accurate in determining the moment of inertia using this experimental design. It also represents the idea that the equations we use to calculate such a value are actually valid. The best fit value for the Moment of Inertia for our total was .01. The uncertainty for this value was .00036. The best fit value of our ring using data collected was .00278. With a percent difference of -13.4 % from our calculated value, we can say that this experiment design had a pretty good accuracy in determining the Moments of Inertia for part A and B of this experiment.
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Unformatted text preview: Conclusion: Our Torque vs. Angular Acceleration graph shows us that our results were acceptable, and highly preferred. Since our percent uncertainty was less than 5 % we can say that our experiment was with little error. To make this experiment better, we could have ensured that the string didn’t get caught up or that the smart pulley was not getting pushed back by the spinning disk in the first place –which happened for our first few run through trials. Also, measuring the diameters to calculate the moments of inertia for both may not have been completely accurate, as we used a ruler to measure the larger disk and a caliber to measure the diameter of the smaller one. Using two different measurement devices allows for some discrepancy. But overall, since we had an R^2 value of .998/. 995 and our graph demonstrates pretty normal trends for the slope, we can say that our graph provides us enough evidence that our experiment was successful....
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This note was uploaded on 09/07/2010 for the course PHYS phys 2625 taught by Professor Mcgraw during the Summer '10 term at Austin Community College.

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