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 190
reference to an axis, lies in this axis. By a plane figureis here meant any material geometrical figure whos§ thick-ness is uniform and indefinitely small in reference to itsother dimensions. Suppose the figure to be made up of parallel materiallines, all bisected, according to the supposition, by…
Mechanics
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