Mechanics and heat; a text book for collleges and technical schools (1916)
Franklin, William S. (William Suddards), 1863-1930, Macnutt, Barry, 1878-1936, [from old catalog] joint author · New York, The Macmillan company; London, Macmillan & co., ltd. · leaf 146
FRICTION. WORK AND ENERGY. 131 energy that a system gives off when it undergoes any changewhatever, depends only upon the initial and final states of thesystem, and is independent of the intermediate stages throughwhich the system may be made to pass. Perpetual motion impossible. A perpetual motion… … Fig. 50&. Fig. 50c. hand many attempts have been quite reasonable. The reason-able attempts have nearly all been attempts to get more work outof a weight while it falls along one path than is required to carrythe weight back to its starting point along another path. Figures50& and 50c show…
Mechanics · Heat
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