There are some of the applications of the two force and three force members in the journal bearings. The difference between the two and the three force members is:
(a) The former is collinear and the latter is parallel
(b) The former is parallel and the latter is perpendicular
(c) The former is perpendicular and the latter is collinear
(d) The former is acting on two points in the body while the latter is on three points
I have been asked this question in final exam.
This intriguing question originated from Frictional Forces on Journal Bearings in portion Friction of Engineering Mechanics