4al Lab #6.12

# 4al Lab #6.12 - Calculation of Q from the resonance...

• Notes
• 1

This preview shows page 1. Sign up to view the full content.

Calculation of Q from the resonance peak (with comparisons): Q from resonance peak (driven 50mm) Q from lightly damped 50mm Absolute Difference Percent Difference 29.04 ± 0.0200 32.2878 ± 0.0134 3.2478 10.059 % Where: b Ik Q Q calculated using “I” and “b”. ? = ? ? ∆? Calculating Q from the resonance peak ∆ = |? − ? 𝐿𝑎?? ?𝑖?? | Difference in Q. 𝛿 = 2∆ ?+ ? 𝐿𝑎?? ?𝑖?𝑒 Calculations: The amplitude at resonance is 11.2 rotary counts. When the amplitude falls to 1 √2 this value, there is 7.848 rotary counts. The width of the peak at this point is roughly 0.025 Hz. Thus… ? ??????𝑎??? = ? ? ∆? 0.726?𝑧 0.025?𝑧 = 29.04. ? ??????𝑎??? = 29.04 ± 0.0200 (estimated error)
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (estimated error) There is a fairly significant difference between the calculated values for Q. This is likely due to the fact that although both systems are subjected to the same damping force of the magnets, one of the systems is being driven whereas the other on is not. There also could have been some error in selecting the portion of the graph to take the width at. Further Analysis: It is definitely possible that the bearings of the CI6538 may not have been perfect and caused and the friction in the pendulum might have caused the pendulum to slow a bit during the trials. One way to estimate the effect of this frictions is to just allow the pendulum system to...
View Full Document

• Winter '08
• Simonson
• History, resonance peak, rotary counts

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern