Force – Fundamentals


Engineering Studies – P1 Fundamental Engineering  –  Mechanical Analysis

This topic introduces basic concepts of force analysis and understanding of force systems.  The various causes of forces are identified. Equilibrium of force systems, transmissibility of forces, centre of mass and explanation of concurrent force systems are key concepts of this topic.

Key Concepts

  • Definition of a force
  • Units of force
  • Equilibrium of forces
  • Types of forces
    • Reactions
    • Loads
  • Transmissibility of a force
  • Representing and adding forces
    • graphically
    • analytically
  • The ‘centre of mass’
  • Concurrent force systems -the three-force rule

Discussion Questions

  1. What is a force?
  2. What effect does gravity have on mass?
  3. What are the units of force?
  4. What are the conventions about describing and representing a force?
  5. Describe the concepts of Newtons three laws
  6. Tension and compression forces
  7. What is equilibrium?
  8. What is the centre of mass?



Force Fundamentals - Mr David Jackson - 122 V1
Horizontal and Vertical Components of a Force
1 - Forces - Australian National University - meriSTEM
2 - Newtons 2nd Law - Australian National University - meriSTEM
3 - Free Body Diagram - Australian National University - meriSTEM
Vectors - Australian National University - meriSTEM
Basic Force of Gravity calculation - meriSTEM - ANU