A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 35
parallelogram E AG H, and the diagonal A H will represent the force compoundedof all the four forces, A B, A C, A D, and A E. But the con-struction may be simplified by merely drawing the lines B F,equal and parallel to A C; F G, corresponding with A D; andG H, bearing the same relation to A E ;… … COMPOSITION OF FORCES. 33
Physics
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