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!

Problem with work

  1. Mar 23, 2008 #1
    hey guys i have tried this problem many times and cant figure out the answer. please help

    Heres the problem:
    Figure 12-56 shows the stress versus strain plot for an aluminum wire that is stretched by a machine pulling in opposite directions at the two ends of the wire. The scale of the stress axis is set by s = 5.50, in units of 10^7 N/m2. The wire has an initial length of 0.950 m and an initial cross-sectional area of 2.50 × 10^-6 m2. How much work does the force from the machine do on the wire to produce a strain of 1.90 × 10^-3?

    This is my work:
    And i get .124094.

    What am i doing wrong?
  2. jcsd
  3. Mar 23, 2008 #2
    Does anyone have any ideas?
  4. Mar 23, 2008 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    It is unclear what is the Elasticity modulus or the slope of the stress - strain curve or the value of the strain at the given stress? You didn't attach a figure.
  5. Jan 13, 2012 #4
    I have a similar problem, my elasticity modulus (stress/strain) = 7E10.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Problem with work
  1. Work problem (Replies: 2)

  2. Problem on Work (Replies: 3)