It is important to determine the loading within the member to ensure the material does not fail.
The internal loading is determined by method of sections which indicates if the member isi n equilibrium, every section of the member is also in equilibrium.
Section cut is performed to expose the internal loading:
(a) Normal force (N_c)
(b) Shear Force (V_c)
(c) Bending moment (M_c)
