2. (25 pts) The frame shown below is supported by pins at C and D. A weight of 80 lb is suspended
by a rope that passes over the frictionless pulley and attaches horizontally to member BD
(0.5 ft above point B, as shown).
a. Set up the free body diagrams of the pulley and members ABC and BD. Properly label
your free body diagrams.
b. Set up the equilibrium equations corresponding to your free body diagrams, ensuring that
you have enough equations to solve for the total number of unknowns in your free body
diagrams. Box your equations. You do not need to solve the equations.
0.5 ft
80 lb
D
B
C
6 ft
9 ft
3 ft
