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Re: Fantasticheskaya model' zvezd i galaktik.
19.05.2014 0:23 | A.P. Vasi

Ya dumayu chto ponyatno chto "gravitaciya" schitaetsya vzaimodeistviem
mezhdu dvumya telami, u menya takoi botvy net.

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Gravitacionnoe vzaimodeistvie

Vazhneishim svoistvom gravitacii yavlyaetsya to, chto vyzyvaemoe eyu uskorenie malyh

probnyh tel pochti ne zavisit ot massy etih tel. Eto svyazano s tem, chto gravitaciya

kak sila v prirode pryamo proporcional'na masse vzaimodeistvuyushih tel. Pri

razmerah tel, dostigayushih razmerov planet i zvezd, gravitacionnaya sila stanovitsya

opredelyayushei i formiruet sharoobraznuyu formu etih ob'ektov. Pri dal'neishem

uvelichenii razmerov do urovnya skoplenii galaktik i sverhskoplenii proyavlyaetsya

effekt ogranichennoi skorosti gravitacionnogo vzaimodeistviya. Eto privodit k

tomu, chto sverhskopleniya imeyut uzhe ne okrugluyu formu, a napominayut vytyanutye

sigaroobraznye volokna, primykayushie k uzlam s samymi massivnymi skopleniyami

galaktik.

Gravitacionnoe vzaimodeistvie odno iz chetyreh fundamental'nyh vzaimodeistvii

v nashem mire. V ramkah klassicheskoi mehaniki, gravitacionnoe vzaimodeistvie

opisyvaetsya zakonom vsemirnogo tyagoteniya N'yutona, soglasno kotoromu sila

gravitacionnogo prityazheniya mezhdu dvumya telami massy $~m_1$ i $~m_2$ , razdelennyh

rasstoyaniem $~R$ est'

$~F = - \gamma \cdot {m_1 \cdot m_2\over R^2}$ .

Zdes' $~\gamma$ gravitacionnaya postoyannaya, ravnaya $~6,673(10)\cdot 10^{-11}$ m³/(kg s²).

Znak minus oznachaet, chto sila, deistvuyushaya na probnoe telo, vsegda napravlena

po radius-vektoru ot probnogo tela k istochniku gravitacionnogo polya, t.e.

gravitacionnoe vzaimodeistvie privodit vsegda k prityazheniyu tel.

Pole tyazhesti potencial'no. Eto znachit, chto mozhno vvesti potencial'nuyu energiyu

gravitacionnogo prityazheniya pary tel, i eta energiya ne izmenitsya posle peremesheniya

tel po zamknutomu konturu.\\\

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Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 7.05.2014 16:46, 1.3 KBait, otvetov: 9)

Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 7.05.2014 22:20, 4.9 KBait)
Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 18.05.2014 23:52, 1.4 KBait)
>> Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 19.05.2014 0:23, 3.3 KBait)
Re: Fantasticheskaya model' zvezd i galaktik. (rosianalove@gmail.com Claudine75, 26.05.2014 15:37, 329 Bait)
Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 1.06.2014 12:56, 1.7 KBait)
Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 1.06.2014 18:39, 5.6 KBait)
Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 3.06.2014 22:36, 3.7 KBait)
Re: Fantasticheskaya model' zvezd i galaktik. (G. J. Gabriella95, 20.06.2014 19:17, 200 Bait)
Re: Fantasticheskaya model' zvezd i galaktik. (A.P. Vasi, 9.07.2014 20:07, 1.1 KBait)