The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 40
e forces. 40. Moments of the Forces (Fig. 37).—The sum of the moments of N, T, and P^about any point x is, as in Art. 36, equal to the vertical ordinate xy multiplied by O2, O2being the horizontal component of the resultant, O2, of the three forces. If now we wish to eliminate the moment of the… … (bout = x^y^ X O2, etc. To get their moments about x, we draw xx parallel to their-►■esultant, «2. The sum of their moments about all points in xx is the same, hence theirmoment about x = xj x O2. The sign of this moment is deteimined by applying the forceO2 along ab; as this force acts…
