VECTORS: RESULTANTS AND COMPONENTS

Vector Identification Summary

Figure 10 Vector Addition Not in Same Line

Classical Physics - Physics theories and other related topics
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VECTORS: RESULTANTS AND COMPONENTS Vectors CP-02 Page 8 Rev. 0 Figure 8 Vector Addition in Same Direction Figure 9 Vector Addition in Opposite Directions VECTORS: RESULTANTS AND COMPONENTS A resultant is a single vector which represents the combined effect of two or more other vectors (called components). The components can be determined either graphically or by using trigonometry. EO 1.1 DEFINE the following as they relate to vectors: c. Vector component d. Resultant EO 1.2 DETERMINE components of a vector from a resultant vector. Resultant When two or more vectors are added they yield the sum or resultant vector. A resultant vector is the result or sum of vector addition. Vector addition is somewhat different from addition of pure numbers unless the addition takes place along a straight line. In the latter case, it reduces to the number line of standards or scale addition. For example, if one walks five miles east and then three miles east, he is eight miles from his starting point. On a graph (Figure 8), the sum of the two vectors, i.e., the sum of the five miles plus the three mile displacement, is the total or resultant displacement of eight miles. Similarly, if one walks five miles east and then three miles west, the resultant displacement is two miles east (Figure 9). The vector diagrams of Figure 8 and Figure 9 are basically scale diagrams of what is happening in the real world of addition of vector quantities.

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