– Nature : La gravitation est une interaction fondamentale \u00e0 distance entre deux corps poss\u00e9dant une masse. C\u2019est une force toujours attractive.Expression litt\u00e9rale : $\\vec{F}_{A\/B} = -G \\cdot \\frac{m_A \\cdot m_B}{d^2} \\cdot \\vec{u}_{AB}$Constante de gravitation : $G \\approx 6,67 \\cdot 10^{-11} \\text{ N}\\cdot\\text{m}^2\/\\text{kg}^2$
\n– Poids et gravitation : \u00c0 la surface de la Terre, le poids d’un objet $\\vec{P}$ est assimil\u00e9 \u00e0 la force gravitationnelle exerc\u00e9e par la Terre sur cet objet : $P \\approx F_{\\text{Terre}\/\\text{objet}}$. Cela permet d’\u00e9crire : $g = G \\cdot \\frac{M_{\\text{Terre}}}{R_{\\text{Terre}}^2}$.<\/p>","protected":false},"excerpt":{"rendered":"
La gravitation universelle est l’attraction mutuelle entre deux corps de masses \\(m_{A}\\) et \\(m_{B}\\) s\u00e9par\u00e9s par une distance \\(d\\), exprim\u00e9e par la loi de Newton \\(F = G \\cdot \\frac{m_A \\cdot m_B}{d^2}\\). \u00c0 la surface de la Terre, cette force d’attraction s’assimile au poids du corps\u2026<\/p>","protected":false},"author":1,"featured_media":774,"template":"","educational_level":[20],"school_subject":[48],"class_list":["post-436","madrasti_course","type-madrasti_course","status-publish","has-post-thumbnail","hentry","educational_level-tronc-commun-scientifique","school_subject-physique-chimie"],"_links":{"self":[{"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/madrasti_course\/436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/madrasti_course"}],"about":[{"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/types\/madrasti_course"}],"author":[{"embeddable":true,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":4,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/madrasti_course\/436\/revisions"}],"predecessor-version":[{"id":783,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/madrasti_course\/436\/revisions\/783"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/media\/774"}],"wp:attachment":[{"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/media?parent=436"}],"wp:term":[{"taxonomy":"educational_level","embeddable":true,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/educational_level?post=436"},{"taxonomy":"school_subject","embeddable":true,"href":"https:\/\/madrasty.ma\/ar\/wp-json\/wp\/v2\/school_subject?post=436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}