Statics Chapter 1: Fundamental principles of statics and force analysis 8 1-1 Fundamental concepts in statics 1. Force 1)Concept: the mechanical interaction of bodies is caused by forces. This interaction can change the state of motion of a body. 2)Effects of forces: Omotion(external effect) @deformation(internal effect) 3)The three elements: F magnitude. direction and point of application. 4)Unit of force: newton(N(International System of Units) kilonewton (KN)9 Chapter 1: Fundamental principles of statics and force analysis §1-1 Fundamental concepts in statics 1. Force 1) Concept: the mechanical interaction of bodies is caused by forces. This interaction can change the state of motion of a body. 2) Effects of forces: ①motion (external effect) ②deformation (internal effect). 3) The three elements: magnitude, direction and point of application. F A 4) Unit of force: newton (N) (International System of Units) kilonewton (kN)