Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

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[221.] Experimentum 2.
[222.] Experimentum 3.
[223.] Experimentum 4.
[224.] Experimentum 5.
[225.] Experimentum 6.
[226.] Experimentum 7.
[227.] Experimentum 8.
[228.] Experimentum 9.
[229.] Experimentum 10.
[230.] Experimentum 11.
[231.] Experimentum 12.
[232.] SCHOLIUM I. Uberior demonſtratio n. 558.
[233.] SCHOLIUM 2. Illuſtratio circa mutuam corporum elaſticorum actionem.
[234.] SCHOLIUM 3. Paradoxi explicatio.
[235.] CAPUT XXV. De motu compoſito.
[236.] CAPUT XXVI. De Percuſſione obliqua. Definitio 1.
[237.] Definitio. 2.
[238.] Machina.
[239.] Experimentum. I.
[240.] CAPUT XXVII. De Colliſione compoſita. Definitio.
[241.] Experimentum. 1
[242.] Experimentum 2.
[243.] Experimentum 3.
[244.] SCHOLIUM 1. Demonſtrationes n. 623. 625. 626. 627.
[245.] SCHOLIUM 2. Inveſtigatio motus memorati in n. 633.
[246.] SCHOLIUM 3. Demonſtratio n. 637.
[247.] CAPUT XXVIII. De Motu Centri gravitatis.
[248.] Definitio.
[249.] SCHOLIUM 1. Demonſtratio n. 660.
[250.] SCHOLIUM 2. Demonſtrationes n. 658. ut & 648.
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223139MATHEMATICA. LIB. I. CAP. XXIII.
Experimentum 10.
Suſpenſis globis, ex argilla molli, æqualibus P & Q, ſint
11517. hi in contrarias partes moti, P velocitate ſex, Q velocita-
22TAB. XXL.
fig. 2.
te quatuordecim, poſt ictum velocitate quatuor motum con-
tinuat, Q ſecum ferens P.
Quia propter maſſas æquales hæ unitate deſignari poſſunt,
producta maſſarum per velocitates ſunt 6.
& 14. , quorum
differentia eſt 8.
, quæ diviſa per ſummam maſſarum 2, dat
velocitatem poſt ictum quatuor.
Experimentum 11.
Non differt experimentum hoc à colliſione in Experimen-
33518. to 7.
memoratâ, poteſt autem velocitas corporum 44TA. XXIL.
fig. 1.
ictum ex nunc demonſtratis determinari.
55511.
Multiplicando maſſam E per velocitatem 17. , habemus 51;
ſubtractis 6, producto maſſæ 2 per velocitatem 3, reſtat 45;
quibus diviſis per 5.
ſummam maſſarum, habemus velocita-
tem novem Experimento detectam.
Si corpus unum quieſcat, ex utrâque regulâ ſequitur cor-
66519. poris moti productum velocitatis per maſſam dividi debere
per maſſarum ſummam.
Experimentum 12.
Globus P ex argillâ molli in globum æqualem quieſcen-
77TAB XXI.
fig. 3.
tem Q, velocitate decem, incurrit, poſt ictum ſimul velo-
citate quinque motum continuant.
Corpus in motu alii corpori ſine impactione motum com-
88520. municare poteſt, in hoc tantum preſſione agendo;
in quo ca-
ſu ſi preſſio qua partes cohærent inter ſe ſuperet preſſionem
corporum mutuam nulla datur partium introceſſio, &
nulla vis
deſtructa :
ideoque ſumma virium ante & poſt 99488; eadem eſt.
Ut autem demonſtremus quomodo corpora mota, preſſio-
1010521. ne in alia, ſine impactione, motum communicare poſſint, con-
1111TAB. XXI.
fig 4.
cipiendum eſt corpus Q, quod formatur revolutione figuræ
a b c d (quæ ſemicirculo &
duobus quadrantibus termina-
tur) circa axem a c.

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