This chapter discusses forces and how to represent and analyze systems of forces. Key points include: - A force is a push or pull that can change the motion of an object. Forces are measured in newtons. - Systems of multiple forces can be analyzed using diagrams like the parallelogram, triangle, and polygon of forces to find the net force (resultant) and force needed to balance the system (equilibrant). - Bow's notation uses letters to label spaces between force lines in a diagram, allowing multiple forces to be represented as vectors in equilibrium. - Examples demonstrate using these force diagrams and techniques to solve for unknown forces in systems.

1. FORCES

3. Overview This chapter helps us to understand what forces are and helps us to apply this knowledge to understand how forces act in engineering components. To master this chapter, work step by step and practise as many examples as possible.