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| Keywords: Duhem Statique ch 2 fig 7.jpg en Fig 7 Another diagram showing the derivation of the magnitude of the circumvolubile torque from the product of the shortest distance of the line of force that pulls a lever arm to the fulcrum and the weight From this Da Vinci derived the moment of force about an axis within a single plane From the figure one can distinguish what leads to the correct value of the moment of an oblique lever arm the product of the weight and the speed with which the weight lowers rather than the product of the weight and the speed with which the extremity of the lever arm turns Les Origines de la Statique 1905-1906 Pierre Duhem 1905 PD-old-auto-1996 France 1996 Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works 1916 Mechanical diagrams Manuscripts of the Bibliothèque de l'Institut de France Public domain in the United States because both published before 1923 and public domain in its home country in 1996 so not eligible for United States URAA restoration of copyright The author died in 1916 so works by this author are also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works Its home country was France which followed the Berne Convention 70 years beyond the life of the author beginning before 1996 Pierre Duhem | ||||
