Bilohi bungo Gravitasi

'''Gravitasi''' mealo '''gravitas''' (londo bahasa Latin ''gravitas'', artiliyo "'''buheto'''"),<ref>{{Cite web|url=https://browse.dict.cc/latin-english/gravitas.html|title=dict.cc dictionary :: gravitas :: English-Latin translation|website=browse.dict.cc|access-date=2021-04-24}}</ref> uyito-yito fenomena alam to toonu nga'ami hale u woluo [[massa]] mealo [[energi]] to [[alam semesta]] - termasuk [[planet,]] [[poliyama]], [[galaksi]], wau hiambola [[cahaya]]<ref>{{Cite book|url=https://books.google.com/books?id=J1d9HJHlISkC&pg=PA347|title=Discovering the Universe: From the Stars to the Planets|last=Comins|first=Neil F.|last2=Kaufmann|first2=William J.|date=2008-12-26|publisher=Macmillan|isbn=978-1-4292-3042-1|language=en}}</ref> [[tarik-menarik]] tuawu sama uwewo. To [[Bumi]], gravitasi moposababu bonda fisik woluo buheto, gravitasi [[Hulalo(penanggalan)|hulalo]] moposababu taluhu lo deheto [[pasang deheto]], wau gravitasi [[matolodulahu]] mo'osababu mai planet wau beragam objek uwewoliyo ma'o to orbitnya ngota-ngota [[tata surya]]. Gaya gravitasi mondo materi to ruang lo hulungo u mola to alam semesta moposababu materi boito ma'aambua, motitihutu poliyama wau moposababu nga'ami poliyama boito a'ambua motitihutu galaksi, sambe mowali lo'iya struktur berskala damango modelomo alam semesta diciptakan ole gravitasi. Gravitasi woluo bentang nilai diila e'enggade, openu efekliyo lebe ma melemah seiring tuwawu objek berjarak lebe molamingo.<ref>{{Cite web|url=https://www.kompas.com/skola/read/2020/01/11/060000569/gravitasi-definisi-dan-faktanya|title=Gravitasi: Definisi dan Faktanya|last=Media|first=Kompas Cyber|date=2020-01-10|website=KOMPAS.com|language=id|access-date=2021-04-24}}</ref>

Fisika modern da'a akurat mendeskripsikan gravitasi mopohuna teori [[relarivitas uumumu]] u diajukan ole [[Albert Einstein]] to 1915, u menjabarkan gravitasi diila odelo gaya tuwawu, dabo odelo konsekuensi mondo massa u mo'olio'a modelomo ngobotu [[kelengkungan ruang-waktu]] u sababuliyo ole distribusi massa u dilla data-datahu. Contoh da'a ekstrim londo kelengkungan ruang-waktu boito uyito-yito h[[uango moitomo]], to toonu diaalu tuwawu bonda uwewo, hiambola tilango, mowali lolos odito tiyo molaode [[horizon poristiwa]] lo huango moitomo.<ref>{{Cite web|url=http://hubblesite.org/home/science|title=Science|website=HubbleSite.org|language=en|access-date=2021-04-24}}</ref>

== Hukum Gravitasi Universal Newton ==
Hukumu gravitasi universal newton dirumuskan odelo botia:

: Setiap massa menarik massa bondo'o uwewoliyo lo gaya segaris lo garisi u mopo'aita uluoliyo lo bondo'o. Damango gaya boito berbanding lurus wolo perkalian oluoliyo massa boito wau berbanding lombu-lombuli wolo [[kuadrat]] lawato lo wolota oluoliyo massa bondo'o boito.<ref name=":0">{{Cite web|url=https://www.kompas.com/skola/read/2020/03/06/131500669/hukum-gravitasi-newton|title=Hukum Gravitasi Newton Halaman all|last=Media|first=Kompas Cyber|date=2020-03-06|website=KOMPAS.com|language=id|access-date=2021-04-24}}</ref>

: <math>F = G \frac{m_1 m_2}{r^2} = m_1 g</math>

: ''F'' uwito damango londo gaya gravitasi wolota oluolio massa bondo'o boito
: ''G'' uwito [[konstanta gravitasi]]
: ''m''<sub>1</sub> uwito damango massa bondo'o bungalio
: ''m''<sub>2</sub> uwito damango massa bondo'o oluolio 
: ''r'' uwito lawato lo wolota oluolio massa bondo'o 
: ''g''  uwito percepatan gravitasi = <math>G \frac{m_2}{r^2} </math>
To sistem internasional,<ref name=":0" /> ''F'' tu'udu modelomo newton (N), ''m''<sub>1</sub> wau ''m''<sub>2</sub>  modelomo kilogram (kg), ''r'' to meeteri (m), wau konstanta ''g'' kira-kira sama wolo 6,67 × 10<sup>−11</sup> N m<sup>2</sup> kg<sup>−2</sup>.
Mondo tutuaulio botia mowali popolahu lo tutuaulio ma'o moreekeni buheto. [[Buheto]] tuwawu bonda uwito tilapulo lo tanggi massa bonda boito wolo [[percepatan gravitasi bumi]]. Tutuaulio boito mowali tilula odelo berikut: W = mg. ''W'' uwito gaya buheto bonda boito., ''m'' uwito massa wau ''g'' uwito percepatan gravitasi. Percepatan gravitasi botia hihihede mondo ngotaambati.<ref name=":0" />

== Sojara teori gravitasi ==

=== Revolusi ilmiah ===
Ponolitian modern modelomo teori gravitasi tumula lo kalaja [[Galileo Galilei]] to pulito abad ke-16 wau bohulio abad ke-17. Lo tilapulo percobaanliyo menjatuhkan bali mondo [[Menara Pisa]], wau de lio olo pengukuran bali u meluncur melalui [[kemiringan]], Galileo mopobilohe uwito damangoliyo percepatan gravitasi uwito sama ode nga'amila objek. Hale botia mowali kemajuan damango mondo uparacaya [[Aristoteles]] to'udipo lio u ta motombanga uwito objek u lebe buheto woluo percepatan gravitasi u lebe damango.<ref>{{Cite web |url=https://m-edukasi.kemdikbud.go.id/medukasi/produk-files/kontenkm/km2016/KM201617/materi1.html |title=Archive copy |access-date=2021-04-24 |archive-date=2017-12-12 |archive-url=https://web.archive.org/web/20171212153515/http://m-edukasi.kemdikbud.go.id/medukasi/produk-files/kontenkm/km2016/KM201617/materi1.html |dead-url=yes }}</ref> Galileo mohutu postulat hambatan udara odelo alasani objek wolo massa kiki'o memungkinkan mai lodehu lebe pelan to atmosfer. Tilapulo lo kalaja Galileo mowali uwolo lo duduta'a formulasi teori gravitasi [[Newton]].<ref>{{Cite book|url=https://www.worldcat.org/oclc/903243792|title=Quantum theory : a mathematical approach|last=Bongaarts|first=Peter|date=2015|isbn=978-3-319-09561-5|location=Cham|oclc=903243792}}</ref>

== Referensi ==