Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1903)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & sons; [etc., etc.] · leaf 12
rce, Q^the pressure of the floor against the rod.Since the rod and block are at rest, P andG intersecting at A, it must be that the floor is sufficiently roughto enable the pressure Q to deviate from the vertical (that is, fromthe normal to plane of floor) by as much as the angle AB V, atleast;… … Fig. 1. 4 NOTES AND EXAMPLES IN MECHANICS. be under the action of P\ the equal and opposite of P^ andtherefore pointing horizontally toward the left; of G\ its weight;and a pressure, R^ from the floor, whose line of action is deter-mined by the fact that it must be the same line of action as that…
