{"id":4564,"date":"2015-03-29T14:10:53","date_gmt":"2015-03-29T12:10:53","guid":{"rendered":"https:\/\/kamerpower.com\/?p=4564"},"modified":"2025-06-19T00:11:37","modified_gmt":"2025-06-18T23:11:37","slug":"concours-eamac-2011-epreuve-de-physique-t-ts","status":"publish","type":"post","link":"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/","title":{"rendered":"Epreuve Concours EAMAC 2011 Physique T &#038; TS"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #000000;\">CONCOURS D\u2019ENTREE AUX CYCLES DE TECHNICIEN SUPERIEUR ET<\/span><br \/>\n<span style=\"color: #000000;\">TECHNICIEN DE L\u2019ECOLE AFRICAINE DE LA METEOROLOGIE ET DE<\/span><br \/>\n<span style=\"color: #000000;\">L\u2019AVIATION CIVILE ( EAMAC )<\/span><br \/>\n<span style=\"color: #000000;\">SESSION 2011\u00a0Concours EAMAC<\/span><br \/>\n<strong><span style=\"color: #000000;\">EPREUVE DE : PHYSIQUE<\/span><\/strong><br \/>\n<span style=\"color: #000000;\">DUREE : 3 HEURES\u00a0<\/span><br \/>\n<span style=\"color: #008000; text-shadow: 2px 0 2px #000;\">KA<\/span><span style=\"color: #ff0000; text-shadow: 2px 0 2px #000;\">M<\/span><span style=\"color: #ffcc00; text-shadow: 2px 0 2px #000;\">ER<\/span><span style=\"color: #800080; text-shadow: 2px 0 2px #000;\">POWER<\/span><span style=\"color: #3366ff; text-shadow: 2px 0 2px #000;\">.COM<\/span><\/p>\n<hr \/>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69de42f7d672b\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69de42f7d672b\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/#telechargez-les-anciens-epreuves-dexamen-eamac-2006-a-2025-et-les-corrigees-depuis-notre-application-kamerpower-epreuves-sur-play-store\" >T\u00e9l\u00e9chargez les anciens \u00e9preuves d&#8217;examen EAMAC 2006 \u00e0 2025\u00a0et les Corrig\u00e9es depuis notre application Kamerpower Epreuves sur Play Store.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/#epreuve-concours-eamac-2011-physique-t-ts\" >Epreuve Concours EAMAC 2011 Physique T &amp; TS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/#exercice-1\" >Exercice 1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/#exercice-2\" >Exercice 2<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kamerpower.com\/fr\/concours-eamac-2011-epreuve-de-physique-t-ts\/#epreuve-concours-eamac-2011-physique-t-ts-2\" >Epreuve Concours EAMAC 2011 Physique T &amp; TS<\/a><\/li><\/ul><\/nav><\/div>\n<h4 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"telechargez-les-anciens-epreuves-dexamen-eamac-2006-a-2025-et-les-corrigees-depuis-notre-application-kamerpower-epreuves-sur-play-store\"><\/span><span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">T\u00e9l\u00e9chargez<\/span> les anciens <span style=\"color: #008000;\">\u00e9preuves d&#8217;examen EAMAC 2006 \u00e0 2025<\/span>\u00a0et les <span style=\"color: #008000;\">Corrig\u00e9es<\/span> depuis notre application Kamerpower Epreuves sur Play Store.<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.kamerpower.cm\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"aligncenter wp-image-68899\" src=\"https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr.png\" alt=\"Kamerpower Epreuves\" width=\"393\" height=\"152\" srcset=\"https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr.png 646w, https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr-600x232.png 600w, https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr-300x116.png 300w, https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr-520x201.png 520w, https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr-320x124.png 320w, https:\/\/kamerpower.com\/wp-content\/uploads\/2025\/05\/google-play-badge-fr-150x58.png 150w\" sizes=\"(max-width: 393px) 100vw, 393px\" \/><\/a><\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"epreuve-concours-eamac-2011-physique-t-ts\"><\/span><span style=\"color: #3366ff;\"><strong><a href=\"https:\/\/kamerpower.com\/fr\/annales-des-epreuves-du-concours-eamac-asecna-2006-a-2018-epreuves\/\">Epreuve Concours EAMAC<\/a> 2011 Physique T &amp; TS<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"exercice-1\"><\/span><span style=\"color: #ff0000;\"><strong>Exercice 1<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"color: #000000;\">Dans ce probl\u00e8me, nous \u00e9tudions le mouvement d\u2019un satellite de Mars nomm\u00e9 Phobos. On\u00a0<\/span><span style=\"color: #000000;\">supposera que tous les objets \u00e9tudi\u00e9s sont \u00e0 r\u00e9partition sph\u00e9rique de masse.<\/span><br \/>\n<span style=\"text-decoration: underline;\"><span style=\"color: #3366ff; text-decoration: underline;\">On done<\/span><\/span><br \/>\n<span style=\"color: #000000;\">G = 6,67.10<i><sup>-11<\/sup><\/i>N.m<i><sup>2<\/sup><\/i>.kg<i><sup>-2<\/sup><\/i>\u00a0\u00a0est la constante de gravitation universelle.<\/span><\/p>\n<p><span style=\"color: #000000;\">Distance entre le centre de Mars et celui de Phobos : r = 9,38.10<i><sup>3<\/sup><\/i>km.<\/span><\/p>\n<p><span style=\"color: #000000;\">Masse de Mars : <i>m<sub>M<\/sub><\/i>\u00a0= 6,42.10<i><sup>23<\/sup><\/i>km \u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">La masse de Phobos sera not\u00e9e\u00a0m_{{P}}<\/span><br \/>\n<span style=\"color: #000000;\">P\u00e9riode de rotation de Mars :\u00a0T_{{m}} = 24h 37min.<\/span><br \/>\n<span style=\"color: #000000;\">On supposera que Phobos a un mouvement circulaire uniforme autour de Mars de vitesse v et<\/span><br \/>\n<span style=\"color: #000000;\">on supposera que l\u2019on travaille dans un r\u00e9f\u00e9rentiel galil\u00e9en centr\u00e9 sur Mars.<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">1)<\/span> Donner la d\u00e9finition d\u2019un mouvement circulaire uniforme.<\/span><br \/>\n<span style=\"color: #000000;\"><span style=\"color: #3366ff;\">2)<\/span> Repr\u00e9senter le point d\u2019application, la direction et le sens du vecteur acc\u00e9l\u00e9ration de\u00a0<\/span><span style=\"color: #000000;\">Phobos sur un sch\u00e9ma.<\/span><br \/>\n<span style=\"color: #000000;\"><span style=\"color: #3366ff;\">3)<\/span> Donner l\u2019expression (sans justification) de la norme du vecteur acc\u00e9l\u00e9ration de Phobos en\u00a0<\/span><span style=\"color: #000000;\">fonction de v et r.<\/span><br \/>\n<span style=\"color: #000000;\"><span style=\"color: #3366ff;\">4)<\/span> Appliquer la deuxi\u00e8me loi de Newton \u00e0 ce satellite.<\/span><br \/>\n<span style=\"color: #000000;\"><span style=\"color: #3366ff;\">5)<\/span> En d\u00e9duire que l\u2019expression de sa vitesse de r\u00e9volution autour de Mars est v = \u221aG<i>m<sub>M<\/sub><\/i>\/r<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">6)<\/span> D\u00e9terminer l\u2019expression reliant v, r et\u00a0T_{{P}} \u00a0(p\u00e9riode de r\u00e9volution de Phobos autour de\u00a0<\/span><span style=\"color: #000000;\">Mars).<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">7)<\/span> Montrer que : Tp^2\/r^3 = 9,22.10^-13s^2m^-3<\/span><\/p>\n<p><span style=\"color: #000000;\">Cette relation d\u00e9finit une loi. Donner son nom.<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">8)<\/span> En d\u00e9duire la valeur de\u00a0T_{{P}} \u00a0.<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">9)<\/span> Dans quel plan faut-il placer un satellite pour qu\u2019il soit immobile par rapport \u00e0 la base<\/span><span style=\"color: #000000;\">\u00a0relais sur Mars ? Justifier votre r\u00e9ponse sans calcul.<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">10)<\/span> Quelle est la p\u00e9riode\u00a0T_{{S}} \u00a0de r\u00e9volution d\u2019un tel satellite ?<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">11)<\/span> Etablir l\u2019expression de l\u2019\u00e9nergie m\u00e9canique du syst\u00e8me Phobos-Mars. D\u00e9duire qu\u2019elle\u00a0<\/span><span style=\"color: #000000;\">est constante au cours du temps.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"exercice-2\"><\/span><span style=\"color: #ff0000;\">Exercice 2<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">1)<\/span> On \u00e9tablit une tension constante U aux bornes (A et B) des armatures d\u2019un condensateur\u00a0<\/span><span style=\"color: #000000;\">de capacit\u00e9\u00a0C_{{1}} . Calculer la charge maximale\u00a0Q_{{max}} \u00a0du condensateur.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">2)<\/span> Le condensateur \u00e9tant charg\u00e9, on isole ses armatures et on le d\u00e9charge dans une bobine\u00a0<\/span><span style=\"color: #000000;\">d\u2019inductance\u00a0L_{{1}} \u00a0et de r\u00e9sistance \u00a0\u00a0r_{{1}} .<\/span><br \/>\n<span style=\"color: #000000;\">Etablir l\u2019\u00e9quation diff\u00e9rentielle des oscillations \u00e9lectriques dans le circuit.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">3)<\/span>\u00a0a) Donner l\u2019expression de l\u2019\u00e9nergie totale \u00e9lectrique (condensateur) et magn\u00e9tique\u00a0<\/span><span style=\"color: #000000;\">(bobine) du circuit.<\/span><br \/>\n<span style=\"color: #000000;\">b)Montrer que l\u2019\u00e9nergie totale du circuit varie au cours du temps et pr\u00e9ciser la forme<\/span><br \/>\n<span style=\"color: #000000;\">sous laquelle se manifeste cette variation.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">c)<\/span> Quelle est la nature des oscillations \u00e9lectriques ainsi obtenues. Que se passera t-il\u00a0<\/span><span style=\"color: #000000;\">dans le circuit pendant un temps suffisamment long ?<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">d)<\/span> Si la r\u00e9sistance de la bobine\u00a0r_{{1}} \u00a0est n\u00e9gligeable qu\u2019elle serait la nature des oscillations ?<\/span><br \/>\n<span style=\"color: #000000;\">Calculer la valeur de leur fr\u00e9quence propre.<\/span><br \/>\n<span style=\"color: #000000;\"><span style=\"text-decoration: underline;\"><span style=\"color: #3366ff; text-decoration: underline;\">On donne<\/span><\/span> : C1= 6,28 uF , U=5oV et\u00a0L_{{1}} \u00a0\u00a0= 0,318H.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"epreuve-concours-eamac-2011-physique-t-ts-2\"><\/span><span style=\"color: #3366ff;\">Epreuve Concours EAMAC 2011 Physique T &amp; TS<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":4530,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[1701],"tags":[1738,1735,1712,1726],"class_list":["post-4564","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-epreuves","tag-annales-epreuves-concours-eamac","tag-concours-eamac-ecole-africaine-de-la-meteorologie-et-de-laviation-civile","tag-epreuve-de-concours-dentree-aux-grandes-ecoles-cameroun","tag-physique"],"_links":{"self":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/4564","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/comments?post=4564"}],"version-history":[{"count":2,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/4564\/revisions"}],"predecessor-version":[{"id":69933,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/4564\/revisions\/69933"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/media\/4530"}],"wp:attachment":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/media?parent=4564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/categories?post=4564"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/tags?post=4564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}