Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 35
whenperpendicular, because the line of direc-tion then falls within its base. But wheninclined, it falls, for the line of directionis then without. But if a portion of thetop be removed, it will stand, for thecentre of gravity is now lowered, so thatthe line of direction falls within the base. 94.… … Fig. 21. out the base. and backward when descending, to bring the line of direc-tion within the base. So with a load upon his back, heleans forward. Upon this principle, the leaning tower ofPiza stands firm. Vessels and cars ought to be loaded withthe heavy articles at the bottom to render them…
Physics
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