$(25$pts$)$ The bar is loaded as shown. Cut between load changes, draw free body force diagrams, and solve for internal forces. The forces shown are applied at A$,$ B$,$ C$,$ and D$,$ respectively. Ignore effect of the flanges.

a$.$ Starting at end A and going left to right, find the internal forces for each segment $AB,BC,CD,$ and DE$.$

b$.$ Starting at end $E$ and going right to left, find the internal forces for each segment $AB,BC,CD,$ and DE$.$ They should be the same as part a$.$