The science of mechanics; a critical and historical account of its development (1902)
Mach, Ernst, 1838-1916, McCormick, Thomas Joseph, 1865- tr · Chicago, The Open court publishing company; · leaf 97
eight Qji, while this is ascending and descendingon a vertical line, so that a pencil which it carries shalldescribe a curve upon the paper (Fig. 55). When thepencil stands at the points a, c, d of the curve, there are, 7° THE SCIENCE OF MECHANICS. Interpreta-tion of thediagram. we see, adjacent… … Fig. 55- displace the system with it. Accordingly, under condi-tions of this kind, equilibrium does not subsist. Ifthe pencil stands at e, then there exist only adjacentconfigurations for which the weight Qjo. stands higher.But of itself the system will not pass into the last-named configurations.…
Mechanics
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