Tension and compression forces on a femur bone

  • Thread starter mishelhad
  • Start date
  • #1
mishelhad
3
0
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
22,412
5,250
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
onatirec
86
77
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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