Bošković, Ruđer Josip
,
Theoria philosophiae naturalis redacta ad unicam legem virium in natura existentium
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tota velocitate, vel vi obliqua compoſita eundem motum, vel
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idem æquilibrium reſtituet, ac idem omnino erit, in effectuum
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computatione conſiderare partes illas binas, & </
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<
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tramque impeditam, ac conſiderare priorem totam, aut velo-
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citatem, aut vim, compoſitam cum iis novis contrariis, & </
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æqualibus illi parti, vel illis partibus, quæ dicebantur elidi.
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<
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">In id autem, quod vel inſerne, vel ſuperne motum maſſæ cu-
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juſpiam impedit, vel vim, non aget pars illa prioris velocita-
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tis, vel illius vis, quæ concipitur reſoluta, ſed velocitas orta
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a vi mutua, & </
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<
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maſſa, a vi mutua, vel ipſa vis mutua, quæ ſemper debet a-
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gere in partes contrarias, & </
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<
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minata diſtantia major, vel minor, quam ſit, quæ limites, & </
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æquilibrium conſtitueret,</
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<
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<
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in ipſo globo
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molli incurren-
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te in planum
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immobile.</
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Ibi in fig. </
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<
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oblique per AB, & </
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<
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ſus. </
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tinguitur, durante AE, vel FB, uti diximus; </
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<
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planum CD. </
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<
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di ad planum CD uſque ad eam exiguam diſtantiam, in qua
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vires variæ agerent; </
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<
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">donec ex omnium actionibus conjunctis
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impediretur ulterior acceſſus ad ipſum planum, ſive perpendi-
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cularis diſtantiæ ulterior diminutio. </
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directione perpendiculari ad ipſum planum juxta num. </
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<
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">debebunt autem, ut impediant ejuſmodi ulteriorem acceſſum,
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producere in ipſo globo velocitatem, quæ compoſita cum tota
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BO perſeverante in eadem directione AB, exhibeat velocita-
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tem per BI parallelam CD. </
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<
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gula AFB, BIO æqualia erunt neceſſario ob AB, BO æ-
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quales; </
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<
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">erit BEIO parallelogrammum, adeoque velocitas per-
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pendicularis, quæ cum priore velocitate BO debeat compone-
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re velocitatem per rectam parallelam plano, debebit neceſſario
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eſſe contraria, & </
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<
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plano, in quam reſolvunt vulgo velocitatem AB. </
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ro vis, quæ ſemper agit in partes contrarias æqualiter, urſe-
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rit planum tantundem, & </
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<
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los, qui vulgo tribuuntur globo advenienti cum velocitate e-
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juſmodi, ut perpendicularis ejus pars ſit EB.</
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<
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">Aliud globi de-
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ſcendentis per
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planum incli-
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natum.</
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memoratis. </
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CD (fig. </
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<
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get hunc in modum. </
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<
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teram BR perpendicularem plano CD, qua urgetur ipſum pla-
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num, quod eum ſuſtinet; </
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<
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no, quæ obliquum deſcenſum accelerat. </
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<
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vitas cogit globum ſemper magis accedere ad planum CD;
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<
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">donec diſtantia ab eodem evadat ejuſmodi; </
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