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 145
ciple of virtual velocities obtains in a levcr of any form. Let ACB be the lever be-fore displacement, ACBits position afterward.From A draw Au perpen-dicular to AP, and from B,Bw perpendicular to BQ,produced. Au is the vir-tual velocity of P, and Buthat of Q. Now when the displacements are… … 122 STATICS. ~P.Av-Q,.Bu=0,or P.AC, sin PAC-Q.BC. sin. QBC=0. _P_BC. sin. QBC*• Q~AC.sin.PAC as found in Art. 134. 200. Prop. The principle of virtual velocities obtains in th&single movable pulley with cords inclined. Let A be the point wherethe cords produced wouldmeet at the first positionof…
Mechanics, Analytic
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