Chapter 16.2, Problem 16.75P

Show that the couple $\bar{I}\alpha$ of Fig. 16.15 can be eliminated by attaching the vectors $m{\bar{a}}_t$ and $m{\bar{a}}_n$ n at a point P called the center of percussion, located on line OG at a distance $GP={\bar{k}}^2/\bar{r}$ from the mass center of the body.

Fig. P16.75