Figure $2$

Figure $2$a

For the system shown in Figure $2,$

a$)$ Draw the influence lines of $R_{Ax},M_m,V_m,N_{\text{k}\text{G}\text{I}},N_{kG2},V_{kG1},M_{cA},M_c,N_h$ for a unit vertical load.

b$)$ Determine the maximum and minimum values of $M_c$ bending moment using influence lines considering the given live loads in Figure $2$a$.$