Chapter 2

●Force – created by the interaction between two bodies

-  vector quantity

● F: represents both the magnitude and the direction of the forces.

● F: denotes only the magnitude of the force

● Force -  can be expressed as direction line on which the force lies is along the shaft of the arrow. 

Fig. 2.2  (a) Representation of a force F by an arrow.  (b) Magnitude of F (1 in = 10 lb). (c) Line of action and point of application of F. (d) Negative force vector - F.