Chapter 12, Problem 67GP

The forces acting on a 77,000-kg aircraft flying at constant velocity are shown in Fig. 12–81. The engine thrust, F_t = 5.0 × 10⁵ N, acts on a line 1.6 m below the cm. Determine the drag force F_D and the distance above the cm that it acts. Assume ${\stackrel{\to }{F}}_{\text{D}}$ and ${\stackrel{\to }{F}}_{\text{T}}$ are horizontal. ( ${\stackrel{\to }{F}}_{\text{L}}$ is the “lift” force on the wing.)