Recent content by mytch

Here is the following part of the text that may help too, it's quite confusing to me. "Let ^s be any spatial vector, motion or force, and let s and sO be the two 3D coordinate vectors that supply the Plucker coordinates of ^s." [me; in Plucker coordinates s are 3 rotations angles around...

Thank you, it makes sense for the most part :) so if a line vector is defined by a vector plus theta and phi (relative to the basis axis?) the text would mean; "A pure rotation of a rigid body is a line vector"; the vector would be 0 and theta and phi would be the rotation of the body...

Hi, I started to study Roy Featherstone's book "Rigid Body Dynamics Algorythms". The book starts off by explaining Spatial Algebra, where translations and rotations are gathered in a 6-D vector using Plucker's coordinates. At some point the book says; "A line vector is a quantity...