Question
In order to find the equilibrium equations in polar coordinates. Page 2 of: (soest.hawaii.edu/martel/Courses/GG703/GG711c_Lec_10.pdf)
Do you have to use the Taylor expansion to get from 10.4 to 10.5? Also, how is this equation altered if there are shear stresses?
Do you have to use the Taylor expansion to get from 10.4 to 10.5? Also, how is this equation altered if there are shear stresses?