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 33
lsupport. We neglect the weight of thecrane, and assume that no pressures areinduced at A and B unless the cranebears a load ; i.e., that the parts areloosely-fitting at A and B. Placingnow a known load at 0, viz., P,, we note that in preventing theoverturning of the crane the right-hand edge of… … Fig. 24. SIMPLE CRANE—GEAPHICALLY AND ANALYTICALLY. 2o while the other is the left-hand vertical side of the socket; there-fore at A we have the vertical and horizontal reactions, P, andP^, both unknown in amount. Now pair off the four forces at convenience ; for example, asin our figure, pair off…
