A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 190
e. The centre of gravity of a straight line is at its middle point.Suppose the line to be made up of a series of materialparticles of equal weight; the centre of gravity of eachpair of them taken at equal distances from the centre ofthe line will be at this point. Hence the centre of grav-ity of…
Mechanics
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