E A B C D a a Bar ABC is supported by a roller at B and a frictionless collar at A that slides on a fixed bar DE. Determine the support reactions at points A and B. Take a = 5in, P= 100 lb. A variety of structures with pin, roller, and built-in supports are shown. In Figs. P5.14(c) and P5.15(c), the rollers at A point D allow vertical translation and constrain horizontal translation and rotation. Determine all reactions. Express your answers in terms of parameters such as L, F, P, and/or M. Start with the FBD of each model, and then work towards the support reactions. L B A D 30 B M A A B (c) D M (b) M (d) D