For the following structural system shown in figure where A and F are Hinge and roller supports respectively, it is required to$?$a$)$ Sketch the free body diagram for the pulley D and calculate the internal forces at the hinge D$?(1$ pts$)$b$)$ Sketch the free body diagram for parts ABC, FEC, BED?c$)$ Calculate the internal forces at the internal hinges B$,$ C$,$ and E$?$d$)$ Calculate the reactions at the supports A and F$?$