Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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PHYSICES ELEMENTA
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<
s
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xml:space
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">Ex quibus quoque ſequitur, quando obſtaculo non omnino immobili inſi ſtit E-
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note-0232-01
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laſterium hoc ad partem oppoſitam exerere vim ſuam totam, demtâ illâ, quâ obſtacu-
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lum poteſt movere.</
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<
s
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xml:space
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">Si hæc applicemus ad caſum memoratum, facile videmus corpori B com-
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note-0232-02
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municari duos gradus vis, quibus partes elaſticæ fuere flexæ, & </
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<
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preſſionem qua elaſterium fuit translatum, durante expanſione , quæ
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ſio eſt actio corporis A in Elaſterium, & </
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<
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ctione amiſſam . </
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<
s
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xml:space
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">Amiſit autem A unum gradum vis, qui ergo ipſi B,
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ter duos memoratos, fuit communicatus; </
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<
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additi uni gradui, quem ante elaſterii actionem habebat, dant quatuor gra-
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dus vis. </
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<
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<
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">Ratiocinium omnino ſimile eſt in aliis caſibus, in quibus poſt ſeparatio-
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nem ad eandem partem corpora tendunt, aut unum quieſcit; </
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<
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partes propoſitas poſt ictum moveantur ex iiſdem principiis difficultas tolli-
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tur, uthoc patebit exemplo.</
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<
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currit in corpus duplum quieſcens B; </
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<
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Poſt ictum B habebit velocitatem 4, id eſt, vim 32. </
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568.</
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habebitque vim. </
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<
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">Ante inſtauratam figuram, corpora ambo cum duobus gradibus velocita-
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tis moventur , & </
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<
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<
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qua corpora poſt ictum, ante ſeparationem quieſcunt, id eſt cujus velocitas
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etiam eſt duo; </
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verſe ut maſſæ ; </
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ſet flexum, etiam vires fuiſſent inverſè ut maſſæ ; </
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<
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Elaſterio, in hac ratione ſunt vires, ideoque velocitates ; </
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<
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bet unum gradum velocitatis in nave, A duos habet, & </
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<
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</
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<
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<
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velocitatis in nave & </
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<
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bet nunc B, ſepoſita nave, velocitatem 4. </
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<
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<
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6. </
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hi gradus corpori B communicantur, & </
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in n. </
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citati 3 ; </
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<
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ri agitato, ipſumque huc uſque totum fuit translatum, nunc autem pro par-
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te tantum transfertur & </
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<
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tum vim 14 poterit ipſi B imprimere ; </
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ut ex aute demonſtratis liquet revera habet.</
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