page10 Published March 31, 2018 at 1024 × 768 in 3/26 – 3/30/18 (FBD, Newton’s 3rd) PhySP18SS6.1.18 Ah, our first truly decent Head-To-Tail FBD. We do it Head to Tail so that we can get the lengths right. Then you can redraw it in the traditional FBD diagram where all forces emanate from the center of mass of the object.