Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 170
equire nowork to move them on a horizontal plane, except to over-come their inertia, and should, therefore, be so constructedas to preserve their centres of gravity always on the samelevel. If, during the motion of awheel, it is seen sometimes toquicken and sometimes to slack-en its motion, it is… … effect of throwingthe centre ofgravity out of theaxis of a wheel. 166 NATURAL PHILOSOPHY. The commonbalance; in the course of a single revolution through the conditionsof stable and unstable equilibrium, the former occurringwhen the centre of gravity G crosses the vertical line B < \through the…
Mechanics · Acoustics · Optics
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