Recent content by jan2re

  1. jan2re

    Principal stresses 3D, solving for direction cosines n1,m1,n1

    Thanks for your answer, maybe i should have posted this in another topic.This is from a lecture in Advanced Mechanics and not homework, i have the complete solution M=0.019, L=0.055 N=0.1256. So the case is how to manage to solve for this values the easiest way. i have written 6-7 pages i...
  2. jan2re

    Principal stresses 3D, solving for direction cosines n1,m1,n1

    I have tried back substition ,gauss jordan,matrices and so on ,but this is only a simple math problem so i don't want to spend 1 hour typing in all this mathematics .
  3. jan2re

    Principal stresses 3D, solving for direction cosines n1,m1,n1

    Homework Statement -4.882L1+M1+2N1=0 L1-2.882M1=0 2L1-0.882N1=0 L1^2+M1^2+N1^2=1 How to solve for L1 ,M1 and N1 ? 0<L1,M1,N1<1Homework EquationsThe Attempt at a Solution
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