CLASSIFICATION OF A FORCE SYSTEM ?

CLASSIFICATION OF A FORCE SYSTEM? 

                  Force system

   (1) Coplanar    (2) Non-coplanar

(1) Coplanar. 

 1.Collinear.

 2.Concurrent.

 3.Parallel.

 4.Non-Concurrent, non-parallel. 

 (2) Non-coplanar. 

  1.Concurrent.

  2.Parallel.

  3.Non-concurrent , non-parallel.