{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

p111_lecture12 - Chapter 6 Work and Energy 6.4 Conservative...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 6 Work and Energy
Image of page 1

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

View Full Document Right Arrow Icon
6.4 Conservative Versus Nonconservative Forces DEFINITION OF A CONSERVATIVE FORCE Version 1 A force is conservative when the work it does on a moving object is independent of the path between the object’s initial and final positions. Version 2 A force is conservative when it does no work on an object moving around a closed path, starting and finishing at the same point.
Image of page 2
6.4 Conservative Versus Nonconservative Forces
Image of page 3

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

View Full Document Right Arrow Icon
6.4 Conservative Versus Nonconservative Forces Version 1 A force is conservative when the work it does on a moving object is independent of the path between the object’s initial and final positions. ( ) f o h h mg W ! = gravity
Image of page 4
6.4 Conservative Versus Nonconservative Forces Version 2 A force is conservative when it does no work on an object moving around a closed path, starting and finishing at the same point. f o h h = ( ) f o h h mg W ! = gravity W gravity = 0
Image of page 5

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

View Full Document Right Arrow Icon
6.4 Conservative Versus Nonconservative Forces An example of a nonconservative force is the kinetic frictional force. ( ) s f s f s F W k k ! = = = o 180 cos cos " The work done by the kinetic frictional force is always negative. Thus, it is impossible for the work it does on an object that moves around a closed path to be zero.
Image of page 6
Image of page 7
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