{"id":496,"date":"2024-07-02T10:38:11","date_gmt":"2024-07-02T10:38:11","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=496"},"modified":"2025-07-16T14:50:59","modified_gmt":"2025-07-16T09:20:59","slug":"specific-force","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/ce\/open-channel-flow\/specific-force","title":{"rendered":"Specific Force"},"content":{"rendered":"\r\n<p style=\"text-align: justify;\">As per the momentum equation, the algebraic sum of all external forces acting in a given direction on a fluid mass is equal to the time rate of change of linear momentum of the fluid mass in that direction.<\/p>\r\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-316 aligncenter\" src=\"http:\/\/study.madeeasy.in\/wp-content\/uploads\/2024\/07\/specific-force.jpg\" alt=\"Specific Force\" width=\"691\" height=\"589\" \/><\/p>\r\n<p style=\"text-align: justify;\">Also, dividing the equation by y, we get,<\/p>\r\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-317 aligncenter\" src=\"http:\/\/study.madeeasy.in\/wp-content\/uploads\/2024\/07\/horizontal-stretch.jpg\" alt=\"Horizontal Stretch\" width=\"349\" height=\"61\" \/><\/p>\r\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-318 aligncenter\" src=\"http:\/\/study.madeeasy.in\/wp-content\/uploads\/2024\/07\/specific-force-variation.jpg\" alt=\"Specific Force \" width=\"615\" height=\"566\" \/><\/p>\r\n<p style=\"text-align: justify;\"><strong>Note:<\/strong><\/p>\r\n<p style=\"text-align: justify;\"><strong>Critical flow is characterized by the following condition:<\/strong><\/p>\r\n<ul style=\"text-align: justify;\">\r\n<li>Specific energy is minimum for a given discharge.<\/li>\r\n<li>Specific force is minimum for a given discharge.<\/li>\r\n<li>Velocity head is equal to half the hydraulic depth.<\/li>\r\n<li>Froude number is equal to unity.<\/li>\r\n<li>The discharge is maximum for a given specific energy.<\/li>\r\n<\/ul>\r\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-319\" src=\"http:\/\/study.madeeasy.in\/wp-content\/uploads\/2024\/07\/type-of-flow.jpg\" alt=\"Type of Flow\" width=\"715\" height=\"145\" \/><\/p>\r\n\r\n\r\n\r\n<p style=\"text-align: center;\"><a class=\"btn btn-danger\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/ce\/open-channel-flow\/velocity-distribution\/\" target=\"_blank\" rel=\"noopener\">&lt;&lt; Previous<\/a> | <a class=\"btn btn-success\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/ce\/open-channel-flow\/section-factor-z-for-critical-flow-computation\/\" target=\"_blank\" rel=\"noopener\"> Next &gt;&gt;<\/a> <br \/><strong> Must Read: <\/strong> <a href=\"https:\/\/study.madeeasy.in\/subjects\/what-is-open-channel-flow\/\" target=\"_blank\" rel=\"noopener\"><strong>What is Open Channel Flow?<\/strong><\/a><\/p>\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>As per the momentum equation, the algebraic sum of all external forces acting in a given direction on a fluid<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[173,2],"tags":[174,176,175],"class_list":["post-496","post","type-post","status-publish","format-standard","hentry","category-open-channel-flow","category-ce","tag-critical-flow","tag-type-of-flow","tag-varying-flow"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=496"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/496\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}