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 166
Fig. 71. 140.] KESOLUTKXN OF FORCES. 147 during no effect, and the other perpendicular, ad. But the vesselis headed in the direction BR; hence to rind the effective compo-nent of the wind in this direction the force ad must be again re-solved into the components af and ae. The tendency of af is… … Fig. 72. Fig. 73. the case of a sail-boat) against the water, and the component for-ward is ae. As a matter of fact there is always a little drifting,whence the motion of the boat is kept in the required directionby the rudder. The action of the rudder is itself another exam-ple of the same…
Mechanics
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