Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 141
first, will determine the position of that point. By the same reasoning it follows, that a body will besupported upon a point, whenever the vertical throughthe centre of gravity passes throughthis point; and all positions of thebody which satisfy this condition,give as many lines intersecting… … Fig. 61.
Mechanics · Acoustics · Optics
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