Are the components of a constant vector having a fixed direction; while (4) shows that the vector resultant of y, y, y moves as if subject to a couple of components x Wx V, x Ux W, x V-x U, (Io) and the resultant couple is therefore perpendicular to F, the resultant of x, x, x, so that the component along OF is constant, as expressed by (iii).
Then the loads at A and B are W(p - x)/p and Wx/p. Now let C (fig.
Resultant tension along the chain at F, the vertical force V passing through the point D, and the horizontal tension at O; hence H: V = DC: FC = wx 2 /2 y: wx = x/2.
K e0 r W'X.u: tN A 1N vi.
If we take A as origin and AN as axis of x, the weight of AP may be denoted by wx, where w is the weight per unit length at A.
Since PNS is a triangle of forces for the portion AP of the chain, we have wx/To=PN/NS, or yW.Xu/2T5, (14)