A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 121
carriage along a horizontal road;against the molecular force of elasticity when a spring iswound up or a bow is stretched. 97. Measurement of Work. The uVrr of work isthe work done by a unit force acting through the unitof distance one foot. If the force be expressed ingravitation measure (72),… … Fig. 40. 102 DYNAMICS. [97. If the force acts obliquely, at an angle /? with thedirection of motion (Fig. 40), then only the effectivecomponent of the force, P cos /?, does the work. Thework done is, therefore, P cos fi.s. (2) (2) The work done may also be measured by theeffect produced; that is,…
Mechanics
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