Chapter 3- Mechanics, Statics - part 1

Mechanic- Static refer to several other topics in Physics. This including:

A.  FORCES
B.  VECTORS & SCALARS
C.  TURNING FORCES
D.  COUPLES
E.  CENTRE  OF GRAVITY & CENTRE OF MASS
F.   STRESS, STRAIN & ELASTICITY
G.   PRESSURE AND BUOYANCY

FORCES  

We must start this section by asking what a force is?  The word force generally denotes a push or a pull.
go through the slides below: