1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Potential Energy and Conservation of energy

  1. Mar 11, 2008 #1
    1. The problem statement, all variables and given/known data
    How does the work required to stretch a spring 2cm compare with the work required to stretch a spring 1 cm?

    2. Relevant equations

    3. The attempt at a solution

    i think its twice the work
  2. jcsd
  3. Mar 11, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Assuming that the two springs are the same and Hookean, you are wrong.
  4. Mar 11, 2008 #3
    P.E. of a spring is 1/2kx^2 , which is directly proportional to the square of extension from the natural length
  5. Mar 11, 2008 #4
    you can derive the expression for the potential enegy of the spring by integrating the hooke law over the distance moved.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?