How Do Non-Concurrent Coplanar Forces Work in Engineering?

[revgol]

Homework Statement

Calculate the magnitude, direction and position of the line of action of the resultant and equilibriant of a non-concurrent coplanar force system containing a minimum of four forces acting in different directions.

Can anybody give me a comprehensive solution to this to include
1. Basic definition of problem
2. Practical examples eg. suspension bridge
3. Solution/ general principles

web links
idiot guides

etc

Many thanks

:)

Homework Equations

The Attempt at a Solution

 

[Steve4Physics]

Edit: Note that the title is incorrect. The question is about non-concurrent forces, not concurrent forces

This is a very old question (12+ years old at the time of replying). The OP has shown zero effort. However, it is very easy to find suitable support material online, e.g.