Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 147
142 NATURAL PHILOSOPHY. | 136,__The triangle ABC, being divided into verythin layers, parallel to the side A 0, it follows, from whathas just been said, that centre of gravity the centre of gravity of of a triangle; ^ ^^ ^ ^^ fore, of the whole tri-angle, will be situatedupon the right line… … the angle A to the middle of the opposite side OB; andhence it must be at the intersection G. Join F D. Since the sides A G and B 0, are dividedproportionally at the points D and F, the line D F isparallel to A B; hence the triangles A G B and D 0 Fare similar, and give the proportion AG GF AB FD…
Mechanics · Acoustics · Optics
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