A force is an action of a body on another. The force tends to move the body in the direction of its action. The action of a force is represented by its magnitude and direction and is a vector quantity. Copy the link given below and paste it in new browser window to get more information on Resultant Force:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/solved-examples-of-resultant-force.aspx

2.  Introduction
 Classification of Forces
 Composition of forces
 Resultant Force
 Determination of Resultant Force
◦ Parallelogram law of forces
◦ Triangle law of forces
◦ Polygon law of forces
 Examples

4.  Coplanar and non-coplanar forces
 Collinear and non-collinear forces
 Concurrent and non-concurrent forces
 Parallel and non-parallel forces

5.  combining many forces with different magnitudes and directions
acting on a single plane or different planes or at a single point.

6.  single force obtained by combining many forces of different
magnitudes and directions to give the same effect as that of the
system of forces.

7.  Parallelogram law of forces
 Triangle law of forces
 Polygon law of forces

8.  Two forces of magnitude 50 kN and 80 kN are acting at a
point with an angle of 60o with each other.

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