Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 17
so marked is re-ferred to in written statement by the two capitalsused; thus the first force mentioned above wouldbe called the force AB. The part of the drawing in which the lines of actionof the forces and the body (here, a derrick-boom) are represented is called aspace diagram; the part in which… … Fig. Art. 3 7 Any number of forces collectively considered is called a system or a setof forces. The forces of a set are called coplanar if their lines of action arein the same plane, and noncoplanar if not in the same plane; they arecalled concurrent if their lines of action intersect in a point,…
Mechanics
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