Axial Deformation / Axial Displacement in Under 3 Minutes!

Axial Deformation and Displacement with Proper Subscripts for Forces

Thermal Expansion and Temperature
Poisson's Ratio

Axial Displacement, Thermal Expansion or Deformation Caused by Changes in Temperatures, and Poisson's Ratio

Main Lecture Video Link:
Axial Deformation, Thermal Expansion, and Poisson's Ratio in 12 Minutes!.

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Other Mechanics of Materials Lectures:
Watch the entire course in less than 4 HOURS!!

20 Elastoplastic Beams and Residual Stresses (torsion too): coming soon

[jaronnsigey]

If all of the reaction forces (ie. F_cb) go in the -x direction (& since sum of all forces = 0), then why is F_cb and the other 2 forces = +15 kips? shouldn't it be -15 kips instead?