{"id":324,"date":"2012-03-27T14:10:12","date_gmt":"2012-03-27T13:10:12","guid":{"rendered":"https:\/\/blogs.ua.es\/jjrr2011\/?page_id=324"},"modified":"2012-12-15T11:49:49","modified_gmt":"2012-12-15T10:49:49","slug":"tema-8","status":"publish","type":"page","link":"https:\/\/blogs.ua.es\/jjrr2011\/programa\/tema-8\/","title":{"rendered":"TEMA 8. Resoluci\u00f3 gr\u00e0fica de sistemes de forces coplan\u00e0ries"},"content":{"rendered":"<p style=\"text-align: justify\">En aquest cap\u00edtol s&#8217;aprendr\u00e0 a <strong>resoldre gr\u00e0ficament els exercicis de sistemes de forces coplan\u00e0ries<\/strong> actuant sobre s\u00f2lids, cossos o elements estructurals, incloent-hi les condicions gr\u00e0fiques que han de satisfer aquests sistemes perqu\u00e8 es troben en equilibri. Els <strong>objectius<\/strong> que intentarem aconseguir s\u00f3n:<\/p>\n<ol style=\"text-align: justify\">\n<li>Determinar gr\u00e0ficament el vector for\u00e7a resultant del sistema.<\/li>\n<li>Determinar la l\u00ednia d&#8217;acci\u00f3 de la resultant (eix central del sistema).<\/li>\n<li>Determinar el valor del moment resultant del sistema.<\/li>\n<li>Verificar si el sistema de forces est\u00e0 en equilibri.<\/li>\n<\/ol>\n<p style=\"text-align: justify\">Tots aquests objectius es poden assolir amb la representaci\u00f3 del que denominarem <strong>pol\u00edgon de forces<\/strong> del sistema i <strong>pol\u00edgon funicular<\/strong> d&#8217;aquest \u00faltim. Finalment, aplicarem la resoluci\u00f3 gr\u00e0fica a un problema interessant i de gran utilitat pr\u00e0ctica com \u00e9s l&#8217;obtenci\u00f3 d&#8217;un sistema equilibrant a un donat. Per exemple, l&#8217;<strong>obtenci\u00f3 gr\u00e0fica<\/strong> de les <strong>reaccions<\/strong> en una <strong>biga recta birecolzada<\/strong> o la <strong>determinaci\u00f3 gr\u00e0fica<\/strong> del <strong>centre de gravetat<\/strong> d&#8217;una secci\u00f3 plana.<\/p>\n<p style=\"text-align: justify\">Un document amb un resum dels cap\u00edtols dedicats als principis de l&#8217;est\u00e0tica i la resoluci\u00f3 tant anal\u00edtica com gr\u00e0fica es pot descarregar des de l\u2019adre\u00e7a electr\u00f2nica del Repositori Institucional de la Universitat d\u2019Alacant: <a href=\"http:\/\/rua.ua.es\/dspace\/handle\/10045\/20610\">http:\/\/rua.ua.es\/dspace\/handle\/10045\/20610<\/a>. Podeu consultar la presentaci\u00f3 corresponent a la sessi\u00f3 de teoria de principis de l&#8217;est\u00e0tica en l\u2019adre\u00e7a electr\u00f2nica <a href=\"http:\/\/hdl.handle.net\/10045\/21537\">http:\/\/hdl.handle.net\/10045\/21537<\/a>.<\/p>\n<p style=\"text-align: justify\"><strong>Bibliografia<\/strong><\/p>\n<p style=\"text-align: justify\">Rodes Roca, J. J., Dur\u00e1 Dom\u00e9nech, A. i Vera Guarinos, J., <em>Fonaments f\u00edsics de les construccions arquitect\u00f2niques<\/em> (Publicacions de la Universitat d\u2019Alacant, Alacant, 2011). Cap\u00edtol 9.<\/p>\n<p style=\"text-align: justify\">Rodes Roca, J. J., <em>Exercicis i problemes dels fonaments f\u00edsics d\u2019arquitectura. I. Vectors lliscants i geometria de masses<\/em> (ECU, Alacant, 2009)<\/p>\n<p style=\"text-align: justify\">Tipler, P. A. i Mosca, G., F\u00edsica per a la ci\u00e8ncia i la tecnologia, Volum 1 (Revert\u00e9, Barcelona, 2010). Cap\u00edtols 1 i 12.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En aquest cap\u00edtol s&#8217;aprendr\u00e0 a resoldre gr\u00e0ficament els exercicis de sistemes de forces coplan\u00e0ries actuant sobre s\u00f2lids, cossos o elements estructurals, incloent-hi les condicions gr\u00e0fiques que han de satisfer aquests sistemes perqu\u00e8 es troben en equilibri. Els objectius que intentarem aconseguir s\u00f3n: Determinar gr\u00e0ficament el vector for\u00e7a resultant del sistema. Determinar la l\u00ednia d&#8217;acci\u00f3 de [&hellip;]<\/p>\n","protected":false},"author":2285,"featured_media":0,"parent":41,"menu_order":7,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-324","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/pages\/324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/users\/2285"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/comments?post=324"}],"version-history":[{"count":5,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/pages\/324\/revisions"}],"predecessor-version":[{"id":463,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/pages\/324\/revisions\/463"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/pages\/41"}],"wp:attachment":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/media?parent=324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}