Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1897)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & Sons · leaf 32
change being made,v/e have Fig. i^2, in which P is given, orassumed, both in amount and position. At A we have an un-known flat-contact pressure Q in a known action-line A . . O,The intersection (9of the two action-lines^ . . 0 and C . . (9 mustbe a point in the action-line cf P\ the unknown… … Fig. 22. P^ = 0 . k^ and Q ~ 0 . .n (the equal and opposite of 6^. . ?•), these lines, or rather lengths, representing forces on the samescale as that on which O . . m represents the first given force P\24. Redundant Support.—If the two supports A and j5, ofthe lever are hoth hinge-joints, as shown…
