Springs and Oscillators

# Springs and Oscillators - PHY 122 LAB Springs and...

This preview shows pages 1–2. Sign up to view the full content.

PHY122 Labs ( © P. Bennett, JCHS) -1- 09/18/06 PHY 122 LAB: Springs and oscillators Introduction In this lab we will measure the static behavior (stretch vs. force) of simple springs, practice linear fits to find the static spring constant, then make an oscillator and test the relationship between frequency and mass to get the dynamic spring constant. Springs, like those in your car's suspension, or between atoms in solids, are important because they produce simple harmonic oscillator motion (SHM), which occurs throughout all of physics and electrical and mechanical engineering. Text Reference: Y&F 6.3, 13.2. Theory - Hooke's law and Simple Harmonic Motion. An ideal spring is massless and linear. That is, it obeys Hooke’s law: F(X)=-k s (X-X 0 ) Eq. 1 where F is the force exerted by the spring (it opposes the stretch) and (X-X 0 ) is the stretch, measured from the resting position (zero force at X 0 ), and k s is the static spring constant. In this lab, the force arises from calibrated weights hung vertically. Hence, we have F = mg. F is in Newtons for “m” in kg and g = 9.80 m/sec 2 . (Real springs have mass and are a little non-linear. In this case, it is useful to define a local or differential spring

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ 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