{"id":5060,"date":"2024-12-08T11:34:19","date_gmt":"2024-12-08T09:34:19","guid":{"rendered":"https:\/\/soigneralzheimer.com\/?p=5060"},"modified":"2024-12-08T11:39:53","modified_gmt":"2024-12-08T09:39:53","slug":"addition-des-forces","status":"publish","type":"post","link":"https:\/\/soigneralzheimer.com\/fr\/addition-des-forces\/","title":{"rendered":"Addition des forces"},"content":{"rendered":"\n<p>Les forces peuvent \u00eatre repr\u00e9sent\u00e9es par des vecteurs. Leur addition suit les r\u00e8gles d&rsquo;addition des vecteurs, un sujet que l&rsquo;on voit de mani\u00e8re abstraite en math\u00e9matiques. Je trouvais sympa de voir la r\u00e8gle d&rsquo;addition des vecteurs avec un exemple concret. Et voil\u00e0!<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?resize=768%2C1024&#038;ssl=1\" alt=\"\" class=\"wp-image-5061\" srcset=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?resize=768%2C1024&amp;ssl=1 768w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?resize=225%2C300&amp;ssl=1 225w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?resize=1152%2C1536&amp;ssl=1 1152w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?resize=9%2C12&amp;ssl=1 9w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175020.jpg?w=1382&amp;ssl=1 1382w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<p>Les deux poids de gauche p\u00e8sent 100g, celui de droite 50g. On regarde les forces agissant sur le point o\u00f9 les trois cordes se rejoignent.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"1024\" height=\"605\" src=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=1024%2C605&#038;ssl=1\" alt=\"\" class=\"wp-image-5065\" srcset=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=1024%2C605&amp;ssl=1 1024w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=300%2C177&amp;ssl=1 300w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=768%2C454&amp;ssl=1 768w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=1536%2C907&amp;ssl=1 1536w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=2048%2C1210&amp;ssl=1 2048w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?resize=18%2C12&amp;ssl=1 18w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/kraft_addition.png?w=2400&amp;ssl=1 2400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>La projection horizontale des forces v et w (en vert), doit se compenser, ainsi que la projection verticale des trois forces (les deux fl\u00e8ches rouges mises bout \u00e0 bout ont la m\u00eame longueur que la fl\u00e8che bleue). Pour obtenir un \u00e9quilibre il faut tirer autant vers le haut que vers le bas, et autant vers la droite que vers la gauche. Ce qui est en haut est comme ce qui est en bas \ud83d\ude09 &#8230;<\/p>\n\n\n\n<p>Nous avons test\u00e9 l&rsquo;oscilloscope en y branchant un haut-parleur et en chantant une note. On obtient un joli signal r\u00e9gulier.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=1024%2C768&#038;ssl=1\" alt=\"\" class=\"wp-image-5062\" srcset=\"https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=1024%2C768&amp;ssl=1 1024w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=768%2C576&amp;ssl=1 768w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=1536%2C1152&amp;ssl=1 1536w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?resize=16%2C12&amp;ssl=1 16w, https:\/\/i0.wp.com\/soigneralzheimer.com\/wp-content\/uploads\/2024\/12\/20241207_175048.jpg?w=1843&amp;ssl=1 1843w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Les forces peuvent \u00eatre repr\u00e9sent\u00e9es par des vecteurs. Leur addition suit les r\u00e8gles d&rsquo;addition des vecteurs, un sujet que l&rsquo;on voit de mani\u00e8re abstraite en math\u00e9matiques. Je trouvais sympa de voir la r\u00e8gle d&rsquo;addition des vecteurs avec un exemple concret. Et voil\u00e0! Les deux poids de gauche p\u00e8sent 100g, celui de droite 50g. On regarde [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","_jetpack_memberships_contains_paid_content":false,"ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[217,218],"tags":[238,237],"class_list":["post-5060","post","type-post","status-publish","format-standard","hentry","category-enseignement-physique","category-experiences","tag-oscilloscope","tag-sommes-des-forces","entry"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/posts\/5060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/comments?post=5060"}],"version-history":[{"count":4,"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/posts\/5060\/revisions"}],"predecessor-version":[{"id":5068,"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/posts\/5060\/revisions\/5068"}],"wp:attachment":[{"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/media?parent=5060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/soigneralzheimer.com\/fr\/wp-json\/wp\/v2\/categories?post=5060"},{"taxonomy":"post_tag","embeddable":true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