Problem $2$:

For the given structure and the moving loads as shown,

construct the influence lines $A_y,B_y,$ and $V_c$ and $M_c$ at $C$;

use the influence lines to determine the maximum reactions of $A_y$ and $B_y$ caused by the moving loads;

use the influence lines to determine the maximum shear, $V_1$ and moment, $M_2$ at $C$ caused by the moving loads.

Hint: You might want to find the resultant force, $R_{\text{m}\text{o}\text{v}\text{i}\text{n}\text{g}}$ of the moving loads and its location first, then place it to the critical position for your calculation.