1. Limited time only! Sign up for a free 30min personal 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!

Workdone on a spring

  1. Oct 7, 2007 #1
    1. The problem statement, all variables and given/known data

    to stretch a spring 3 cm from its unstretched lenght, 12 J of work must be done. How much work must be done to compress this spring 4 cm from its unstretched lenght?

    2. Relevant equations

    W=1/2 kx[tex]^{2}[/tex]

    3. The attempt at a solution

    a. W=1/2 kx[tex]^{2}[/tex]


    b. W=1/2 kx[tex]^{2}[/tex]
    W= 1/2 (800)(-0.04)[tex]^{2}[/tex]
    w= 0.64J

    im not sure if this is correct..
  2. jcsd
  3. Oct 7, 2007 #2
    we haven't discuss this in class yet, so im not sure if im doing it right
    Last edited: Oct 7, 2007
  4. Oct 7, 2007 #3
    Its x square...you have used x.Rest seems fine.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook