Mechanical and marine engineering science ... Specially written as a handbook to the Board of Trade examinations for extra-first-class engineers (1909)
Somerscales, A. N · Glasgow : J. Munro; London, Simpkin, Marshall, Hamilton, Kent · leaf 159
GRAM OF FORCES. 4. Two forces of 2 and 3 lbs. respectiYcly act at an angle of60 degs. to each other, find their resultant. In figure 58, the resul-tant is, of course, AD and ifthe figure is drawn to scaleit can be measured off. Butthe angle of 60 degs. happensto be one of the angleswhich can be… … 5. A tnnnel shaft weighing. 6 tons is lifted by two chainssecured near the ends of the shaft and passing throughan opening in the top of the tunnel. One chain makesan angle of 105 degs. and the other an angle of 110degs. with the shaft which is horizontal. Find thetension on the chains to three…
Naval architecture
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