Problem Four
The pipe assembly of the figure is supported by a fixed support at point A. Two couple-
moments are applied to the assembly, which are indicated on the figure with arrows having
double arrowheads. In Cartesian coordinates, the applied couple-moments are $M_1 = -150 \hat{k}$
N-m and $M_2 = +200$ N-m. You may neglect the weight of the pipe assembly.
1. Draw a FBD which is suitable for solution of this problem, when seeking the unknown
force and moment reactions at the fixed support, Point A. You may use the existing
drawing given below.
Your FBD must clearly/correctly show the force and moment reaction vectors. Use
double arrowheads to distinguish moment vectors from force vectors.
2. Write the equations of equilibrium and solve to find the reactions at Point A. Specifically,
find the force-reaction vector, $\vec{A}$ and the moment-reaction vector, $\vec{M_A}$