4 Forces

4.1 Combining forces  

4.2 Components of vectors  

4.3 Centre of gravity  

4.4 The turning effect of a force  

4.5 The torque of a couple  

4 Forces: vectors and moments

Exercise 4.1 Adding forces

Exercise 4.2 Resolving forces

Exercise 4.3 Moment of a force

Exam-Style Questions