An elementary treatise on theoretical mechanics (1893)
Ziwet, Alexander, 1853-1928 · New York, London, Macmillan and Co. · leaf 125
,<^ must be applied in the negative sense (clockwise) to the normals atA and B; this gives one limiting position D for the point Z>. Theother position Z> is found by applying the friction angles in the positivesense. Equilibrium will therefore subsist if the weight be placed any-where… … Fig. 58. 190. As another example consider the ordinary jack intended to raisean eccentric load fFacting vertically downwards through A (Fig. 59) by a force P passing vertically upwards throughthe pitch-line B of the rack. Near C and Z>the rack is pressed against the casing. Thedirections of the…
Mechanics, Analytic
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