Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Solve 3 equations in three unknowns I, W, and L

  1. Feb 3, 2012 #1
    1. The problem statement, all variables and given/known data

    Solve 3 equations in three unknowns I, W, and L to find the critical value of L.

    ***Please See attachment 'differential.gif'****

    also note, that I wrote all this using 'mathtype', if its of importance for any to know.

    2. Relevant equations

    Please see attachment 'differential.gif'

    3. The attempt at a solution

    ****Please see attachment 'Differential tryout.gif' and 'Differential Tryout2.gif'***

    I squeezed my brain to what it can handle, but I can not understand how the textbook has got such a solution by its process which I do not understand------Please see attachment 'Differential textSolution.gif' ( since their is a max of three attachments, I am gona make a new thread named 'Differential Text sol' with the attachment.
     

    Attached Files:

  2. jcsd
  3. Feb 3, 2012 #2
    Differential text sol

    1. The problem statement, all variables and given/known data

    see attachment in thread 'differential'

    2. Relevant equations


    See attachment in thread 'Differential'

    3. The attempt at a solution

    this has the text solution, which i do not understand how it got it????. Please see attachment "Differential text solution.gif'
     

    Attached Files:

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook