Chapter 8 Notes

Chapter 8 Notes - Chapter 8 Conservation of Energy...

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

View Full Document Right Arrow Icon
Chapter 8: Conservation of Energy Potential Energy of a Conservative Force - The potential energy of the spring represents the capacity of the spring to do work by virtue of its deformation - When we compress a spring, we store latent work in it, which we can recover at a later time by letting the spring push against something - We can conclude that for the particle moving under the influence of the spring force, the sum of the kinetic and elastic potential energies is constant o E = K + U = ½ mv 2 + ½ kx 2 - Conservative = W = -U 1 + U 1 = 0 - A round trip that starts and ends at x 1 , the work the force does during the outward portion of the trip is exactly the negative of the work the force does during the return portion of the trip, therefore the net work is zero - Friction is an example of a nonconservative force - The work done by the friction during the outward portion is negative, and same with the inward portion, which means that the work done will always be negative - -
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern