Elements of mechanics: treated by means of the differential and integral calculus (1887)
Peck, William G[uy], 1820-1892. [from old catalog] · New York, Chicago, A. S. Barnes & company · leaf 73
he pyramid is on this line (Art. 52). Let AB CB be a pyramid, and K the middle point ofBC. Draw KB and KA, and layoff KO = \KB, and KO = \KA.Then will 0 be the centre of gravityof the face BB C, and 0 that of theface GAB. Draw AO and BO in-tersecting in G. Because the centreof gravity of the… … Fig. CENTRE OF GRAVITY. 69 their homologous sides are proportional. But 0 Or is one-third of AB, consequently OG is one-third of GA, or one-fourth of AO. Hence, the centre of gravity of a triangular pyramid ison a line drawn from its vertex to the centre of gravity ofits base, and at one-fourth of…
Mechanics
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