Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 103
an ideal simplependulum is meant one in which the entire mass is supposed collected at a pointand suspended by an in-extensible thread withoutweight. Let the mass m besuspended from A (Fig.40) by the thread of length/. In the position B theacceleration BCr may be4 resolved into two components, the… … Fig. 40. equal to 0. ment BN being called x.Hence f Moreover, 0 equals — or —, the displace- - I/ The acceleration of the mass m at B is therefore proportional to its displacement x from the middle point ofits path N. But this relation is characteristic of simpleharmonic motion. The motion of the…
Physics
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-271-175.webp)
