{"id":1214,"date":"2025-12-22T17:07:22","date_gmt":"2025-12-22T08:07:22","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=1214"},"modified":"2026-02-07T18:32:15","modified_gmt":"2026-02-07T09:32:15","slug":"%eb%b2%a0%eb%a5%b4%eb%88%84%ec%9d%b4-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=1214","title":{"rendered":"\ubca0\ub974\ub204\uc774 \uc815\ub9ac"},"content":{"rendered":"\n

  <\/span>   <\/span>\"\[ P + \frac{1}{2}\rho v^2 + \rho g y = \rm{const.}\]\"<\/p><\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

  <\/span>   <\/span>\"\[F_1 = P_1 A_1 , F_2 = P_2 A_2\]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \Delta m = \rho \Delta V = \rho A_1 \Delta x_1 = \rho A_2 \Delta x_2\]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[A_1 \frac{\Delta x_1}{\Delta t} = A_2 \frac{\Delta x_2}{\Delta t}\]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ A_1 v_1 = A_2 v_2 = Av = \rm{const} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[W_1 = F_1 \Delta x_1 = P_1 A_1 \Delta x_1 = P_1 \Delta V \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[W_2 = F_2 \Delta x_2 = P_2 A_2 \Delta x_2 = P_2 \Delta V \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ W= W_1 - W_2 = (P_1 - P_2 ) \Delta V = \Delta E_k + \Delta E_p \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ E_k = \frac{1}{2}(\Delta m) v_2^2 - \frac{1}{2}(\Delta m) v_1^2 \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ E_p = (\Delta m) g y_2 - (\Delta m) g y_1 \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ (P_1 - P_2 ) \Delta V = \frac{1}{2}(\Delta m) v_2^2 - \frac{1}{2}(\Delta m) v_1^2 + (\Delta m) g y_2 - (\Delta m) g y_1 \]\"<\/p> <\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{equation*}\begin{aligned}P_1 - P_2 &= \frac{\Delta m}{\Delta V}\frac{1}{2}(v_2^2 - v_1^2) + \frac{\Delta m}{\Delat V} g(y_2 - y_1) \\&= \frac{1}{2}\rho (v_2^2 - v_1^2 ) + \rho g (y_2 -y_1)\end{aligned}\end{equation*}\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \therefore P_1 + \frac{1}{2} \rho v_1^2 + \rho g y_1 = P_2 + \frac{1}{2} \rho v_2^2 + \rho g y_2 \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \therefore P + \frac{1}{2}\rho v^2 + \rho g y = \rm{const.}\]\"<\/p><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

                                                       <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[95,96,97],"class_list":["post-1214","post","type-post","status-publish","format-standard","hentry","category-5","tag-95","tag-96","tag-97"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1214"}],"version-history":[{"count":14,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1214\/revisions"}],"predecessor-version":[{"id":1229,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1214\/revisions\/1229"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}