Chapter 1 General Principles
1.1 What is Mechanics?
Mechanics is the study of what happens to something (a body) when forces are
applied to it
Either the body or the forces can be large or small
Examples:
Three Branches of Mechanics:
1. Rigid-body mecha

8
Chapter 2 Force Vectors
2.1 Scalars and Vectors
All physical quantities in statics are either scalars or vectors.
Scalar:
Any positive or negative physical quantity that can be completely defined by its
.
Examples:
Vector:
Any quantity that requires b

GE 124 Fall 2013
Lecture Note 3
EQUILIBRIUM OF A
PARTCLE
Engineering Mechanics Statics and Dynamics
R.C. Hibbeler, 13th Edition
CHAPTER 3
Review Questions
Explain the difference between
a particle and a rigid body?
How can the component of a
force along

GE 124 Fall 2013
Lecture Note 4
MOMENT OF A FORCE, PRINCIPLE
OF MOMENTS & MOMENT OF A
COUPLE
Engineering Mechanics Statics and Dynamics
R.C. Hibbeler, 13th Edition
CHAPTER 4, SECTIONS 4.1 -4.6
GE 124 Fall 2014, Engineering Mechanics by Hibbeler, 13th Edit