Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 144
y is at the middle point 0, on the line of symme-try. A similar reasoning may be applied to all bodies ofsymmetrical dimensions. The centre of gravity of a surface which has two axesof symmetry, is at the intersection of these axes. Thetransverse and conjugate axes of the ellipse, for ex-ample,… … illustration incase of asymmetricalcurve; centre of gravityof a surface withtwo axes ofsymmetry; 140 NATURAL PHILOSOPHY. @E±EB case of the centre of gravity of the elliptical surface. For the same reason, therectangle; centre of gravity of a rectangle is at the intersection of the right lines…
Mechanics · Acoustics · Optics
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