Tension and compression forces on a femur bone

  • Thread starter mishelhad
  • Start date
  • #1
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Summary:: Hello all,
I need help with this question, ill attach the equations i managed to solve.
How do i continue from there?

Screenshot_20210617-003639_Samsung Notes.jpg
Screenshot_20210617-003639_Samsung Notes.jpg
IMG-20210616-WA0024.jpg
 

Answers and Replies

  • #2
21,275
4,725
The stress should be expressed as N/m^2.

I have no idea how you determined the moment, but it certainly is not determined by the equation that you employed. It should be the force times the moment arm.
 
  • #3
69
54
Looks like they found the axial stress and set it equal to the bending stress, which is incorrect. They should each be solved for by their respective equations.

I don't think there's anything inherently wrong with N*mm^-2, which is MPa, as long as the units are properly tracked. That said, the final answer doesn't even have any units with it.
 

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