{"id":35,"date":"2005-06-30T09:17:00","date_gmt":"2005-06-30T07:17:00","guid":{"rendered":"https:\/\/kids.esa.int\/what_is_gravity\/"},"modified":"2026-10-08T00:23:19","modified_gmt":"2026-10-07T22:23:19","slug":"what_is_gravity","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/what_is_gravity\/","title":{"rendered":"Kaj je gravitacija?"},"content":{"rendered":"
\n

Ste se kdaj spra\u0161evali, zakaj vedno z udarcem pademo nazaj na tla, ne glede na to, kako visoko sko\u010dimo? Enako vpra\u0161anje so si ljudje zastavljali \u017ee pred 340 leti. Takrat je britanski znanstvenik Isaac Newton odkril gravitacijsko silo.<\/p>\n<\/div>\n

128125 Zgodba pripoveduje, kako je bil Isaac v svojem vrtu, ko mu je jabolko padlo na glavo. Medtem ko si je masiral modrico, se je za\u010del spra\u0161evati, zakaj ga je jabolko udarilo, namesto da bi poletelo navzgor.<\/p>\n

Newton je pri\u0161el do zaklju\u010dka, da mora obstajati neka nevidna sila, ki jabolko privla\u010di proti Zemlji. To silo je poimenoval \u201cgravitacija\u201d \u2013 po latinski besedi \u201cgravitas\u201d, ki pomeni \u201cte\u017ea\u201d.<\/p>\n

\"Newton's
Newtonov top<\/figcaption><\/figure>\n

Newton je spoznal, da vsak predmet v vesolju privla\u010di vsak drug predmet v vesolju. Celo jabolko rahlo privla\u010di vse, kar je okoli njega.<\/p>\n

Prav gravitacija dr\u017ei Luno v tirnici okoli Zemlje, prav gravitacija pa omogo\u010da Soncu, da dr\u017ei skupino svojih planetov. Privla\u010dna sila Sonca in Lune povzro\u010da tudi plimovanje v zemeljskih oceanih.<\/p>\n

Vendar pa je mo\u010d gravitacije odvisna od velikosti in gostote telesa \u2013 kar znanstveniki imenujejo njegova \u201cmasa\u201d. Gravitacija majhnega jabolka je pre\u0161ibka, da bi premagala privla\u010dno silo ogromne Zemlje, zato pade proti sredi\u0161\u010du planeta.<\/p>\n

Gravitacijska sila, ki jo izvaja neko telo, se z oddaljenostjo od njega zmanj\u0161uje. Plezalec na vrhu gore Everest tehta nekoliko manj kot na morski vi\u0161ini. \u010ce se vesoljska ladja oddalji dovolj dale\u010d od Zemlje, bo s\u010dasoma popolnoma u\u0161la njenemu gravitacijskemu vplivu.<\/p>","protected":false},"excerpt":{"rendered":"

Have you ever wondered why you always fall back to the ground with a bump, no matter how high you jump? People were asking the same question 340 years ago. […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2002\/01\/sir_isaac_newton_1642-17272\/17864713-3-eng-GB\/Sir_Isaac_Newton_1642-1727.jpg","esa_banner_description":"Sir Isaac Newton, 1642-1727","esa_banner_credit":"Isaac Newton Institute for Mathematical Studies","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/01\/Sir_Isaac_Newton_1642-17272","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":4271,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/35\/revisions\/4271"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=35"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=35"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=35"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=35"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=35"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=35"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=35"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}