An elementary treatise on mechanics, embracing the theory of statics and dynamics, and its applications to solids and fluids (1868)
Smith, Augustus W. (Augustus William), 1802-1866 · New York : Harper · leaf 142
Ps displacement =PP=AC.^D1C,D=AC Ws displacement =WW =CB.z.D2CD=CB By the principle of virtual velocities,P.PP-W.WW =0, arcD.D CD arc D3D ~CD~ ilS STATICS. or or RAC,i^-W.CB.^^=0, CD CD „AC TirCB p w ■—=0 DC CD W AC CD ■ W CD ; and when AC = BC, P BCCDas found in Art. 143. P ~CD 193. Pkop. TTie… … If the pulley A be raised to A,we shall have AA=WW=iPF,since each of the cords passinground the pulley A must be short-ened by a length =WW. WW,the virtual velocity of W, is nega-tive. .-. P.PP-W.WW=0,or P.PP-W.|PP=0. W Hence -p-=2, as found in Art. 158. 194. Prop. The principle of virtual…
Mechanics, Analytic
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