The document provides an overview of force systems, explaining the concept of equilibrium where the sum of all forces on an object equals zero. It classifies forces into various categories, such as coplanar and non-coplanar forces, and describes their characteristics like parallel, concurrent, and non-concurrent forces. For further details, a link to additional resources is provided.

1. An introduction
SYSTEM OF FORCES

2. Equilibrium of Forces
What? When?
When the sum of all forces acting on an object is zero.
𝑖=1
𝑛
𝐹𝑖 = 0

3. Force Couple System
What? When? F
F
S
Two forces producing zero resultant but some moment.
𝑖=1
𝑛
𝐹𝑖 = 0
𝑖=1
𝑛
(𝐹𝑖 𝑟𝑖) ≠ 0

4. System of Forces
Classification
System of Forces
Coplanar Forces
Coplanar Parallel Forces
Coplanar-
like forces
Coplanar-
unlike
forces
Coplanar
Concurrent
Forces
Coplanar
Non-
concurrent
Forces
Collinear
Forces
Concurrent
Forces
Non-Coplanar Forces
Non-
Coplanar
Parallel
Forces
Non-
Coplanar
Concurrent
Forces
Non-
Coplanar,
Non-
Concurrent
Forces

5. Coplanar Forces
Forces lie in the same plane.
Coplanar-Parallel Forces
Coplanar-Concurrent Forces
Coplanar Non-Concurrent Forces

6. Collinear Forces
Forces acting on an object are in line with each other.
Same Lines of Action

7. Concurrent Forces
Forces acting on an object pass through a common point
Intersecting Lines of Action

8. Non-Coplanar Forces
Forces acting on an object are not in the same plane.
Non-Coplanar, Parallel Forces Non-Coplanar, Concurrent Forces
Non-Coplanar, Non-Concurrent Forces

9. Hey Friend,
This was just a summary on System of Force. For more detailed i
nformation on this topic, please type the link given below or cop
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www.transtutors.com/homework-help/civil-engineering/fund
amental-concepts/system-of-force.aspx