Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 132
Be = c a = ca and because Gc is parallel to A a, the triangles Be 0 andBa A, give the proportion, Be whence c a Q BG : GA; BG : AG; that is to say, the line of di-rection of the resultant of anytwo parallel components, di-vides the line joining theirpoints of application intoparts which are… … q\ _P. Rule for position R of resultant; P± Q : P :: BG±AG : BG,P± Q : Q :: BG±AC : AG; 128 NATURAL PHILOSOPHY, or, replacing P ± Q by B, and B G ± A G by the wholeline B A, B : P :: AB : BC, B : Q : : AB : AC; relation of that is to say, the resultant of two parallel components is to component.…
Mechanics · Acoustics · Optics
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