If two or more than two forces are acting on a single plane then the forces are known as System of Coplanar Forces and if they are acting on different planes then the forces are called as Non-Coplanar Forces. Copy the link given below and paste it in new browser window to get more information on Resultant of Coplanar Parallel Forces:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/resultant-of-coplanar-parallel-forces.aspx

2.  Introduction
 System of Forces
 System of Coplanar Forces
◦ Coplanar Collinear Forces
◦ Coplanar Concurrent Forces
◦ Coplanar Parallel Forces
◦ Coplanar Non-parallel Forces
 Determination of Resultant of the Coplanar Parallel Forces
 Examples

3.  If a number of forces are acting on only one plane then the system is
known as a system of coplanar forces.

6. A system of coplanar parallel forces of magnitude 10 kN, 15 kN, 19 kN and
8 kN are acting on a rigid rod of length 4 m as shown in figure. Find the
resultant force of the system of forces. Also locate the point where the
resultant force acts.

7. Two coplanar forces of magnitude 50 N and 100 N are acting on the ends
of a long rod of length 360 mm. Determine the resultant force of the system
of coplanar parallel forces. Also locate the point where the resultant force
acts.

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