{"id":9077,"date":"2010-08-12T15:41:00","date_gmt":"2010-08-12T15:41:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=9077"},"modified":"2010-08-12T15:41:00","modified_gmt":"2010-08-12T15:41:00","slug":"%ed%83%84%ec%84%b1%ea%b3%84%ec%88%98","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=9077","title":{"rendered":"\ud0c4\uc131\uacc4\uc218"},"content":{"rendered":"<div class=\"desc\">\n        \uc5d0\ub108\uc9c0\uc5d0 \uad00\ud55c \uae00\uc744 \uc4f0\ub2e4 \ubcf4\ub2c8 \ud0c4\uc131\uacc4\uc218\uc5d0 \uad00\ud55c \uc124\uba85\uc744 \ud574\uc57c \ud560 \uac83 \uac19\ub2e4.<\/p>\n<p>        \ud0c4\uc131\uacc4\uc218\ub294 \ubb3c\uccb4\uac00 \ubcc0\ud615\uc5d0 \ubc18\uc751\ud558\ub294 \uc815\ub3c4\ub97c \ub098\ud0c0\ub0b4\ub294 \uc218\uc774\ub2e4. &#8211; \uc6d0\ub798\ub294 \ud150\uc11c\ub2e4.<\/p>\n<p>        \ud150\uc11c\ub294 \ub610 \ubb50\ub0d0\uace0 \ubb3c\uc73c\uc2e0\ub2e4\uba74, \uadf8\uc800 \uc6c3\uc9c0\uc694. \ud5d0.<\/p>\n<p>        \ubcf5\uc7a1\ud55c \uc138\uc0c1\uc744 \uc774\ud574\ud558\ub294 \uac74 \uc5b4\ub824\uc6b4 \uc77c\uc774\ub2e4. \ubb3c\ub9ac\ud559 \ud558\ub294 \uc0ac\ub78c\ub4e4\ub3c4 \uadf8\uac74 \uc608\uc678\uac00 \uc544\ub2c8\uae30 \ub54c\ubb38\uc5d0, \ucd5c\ub300\ud55c \uc26c\uc6b4 \ubb38\uc81c\ub9cc \ud480\uae30 \uc704\ud574\uc11c \ubcf5\uc7a1\ud55c \ubb38\uc81c\ub97c \uc27d\uac8c \ub9cc\ub4dc\ub294 \uae30\uc220\uc744 \uc775\ud614\ub2e4.<\/p>\n<p>        \uc704\uce58 \uc5d0\ub108\uc9c0\uc640 \ud798\uc758 \uad00\uacc4\uc5d0\uc11c, \ud798\uc740 \uc704\uce58 \uc5d0\ub108\uc9c0\ub97c \ubbf8\ubd84\ud558\uba74 \uc5bb\uc744 \uc218 \uc788\ub2e4. \uadf8\ub7f0\ub370 \uc2e4\uc81c \uc704\uce58\uc5d0\ub108\uc9c0\ub294 \ub9e4\uc6b0 \ubcf5\uc7a1\ud558\uace0, \ub530\ub77c\uc11c \uc5ec\uae30\uc11c\ubd80\ud130 \uc5bb\uc5b4 \uc9c0\ub294 \uc2e4\uc81c \ud798\uc740 \uc5ed\uc2dc \ub9e4\uc6b0 \ubcf5\uc7a1\ud558\ub2e4. \uadf8\ub798\uc11c \uae09\uc218 \uc804\uac1c\ub97c \uc4f4\ub2e4.<\/p>\n<p>        $U(x) = a +bx + cx^2 + dx^3 &#8230;$<\/p>\n<p>        \ubb3c\ub860, \uc774\uac78 \ubbf8\ubd84\ud558\uc5ec \uc74c\uc218\ub97c \ucde8\ud558\uba74 \ud798\uc774\ub2c8\uae4c<\/p>\n<p>        $F(x) = -b &#8211; 2cx &#8211; 3dx^2 &#8230; $<\/p>\n<p>        \uc5ec\uae30\uc11c \ubb3c\ub9ac\ud559\uc790\ub4e4\uc740 2\ucc28 \ud56d \uc774\ud6c4\ub85c\ub294 \ub2e4 \ud544\uc694 \uc5c6\ub2e4\uace0 \uac00\uc815\ud558\uace0 \ubc84\ub9b0\ub2e4. \uadf8 \uc774\uc720\ub294, \uc6b0\ub9ac\uac00 \uad00\uc2ec\uc788\ub294 \ubb38\uc81c\ub294 \uc548\uc815\uc801\uc778 \uc5b4\ub5a4 \uc9c0\uc810\uc5d0\uc11c \uc544\uc8fc \uc870\uae08 \ubc97\uc5b4\ub09c \uacbd\uc6b0\uc5d0 \ub300\ud55c \ubb38\uc81c\uc774\uace0, \uc548\uc815\uc801\uc778 \uc9c0\uc810\uc744 0\uc774\ub77c\uace0 \ud55c\ub2e4\uba74, \uac70\uae30\uc11c \uc544\uc8fc \uc870\uae08 \ubc97\uc5b4\ub09c \uc9c0\uc810 x\uc5d0 \ub300\ud574\uc11c \uae09\uc218 \uc804\uac1c\ub97c \ud558\uba74, \uadf8 x\ub97c \uc5ec\ub7ec\ubc88 \uacf1\ud560\uc218\ub85d \uadf8 \uc601\ud5a5\ub825\uc774 \uc791\uc544\uc9c0\uae30 \ub54c\ubb38\uc774\ub2e4.<\/p>\n<p>        \uadf8\ub798\uc11c<\/p>\n<p>        $F(x) = -b &#8211; 2cx $<br \/>\n        <br \/>\n        \uc774\ub807\uac8c \uc4f0\uc790.<\/p>\n<p>        \uc0c1\uc218\ub85c \uc77c\uc815\ud558\uac8c \uc791\uc6a9\ud558\ub294 \ud798\uc740, \ubb38\uc81c\ub97c \ud480\ub824\uace0 \ud558\ub294 \uacc4 \uc804\uccb4\ub97c \uacc4\uc18d\ud574\uc11c \uac00\uc18d\ud558\uae30 \ub54c\ubb38\uc5d0 \uc0ac\uc2e4 \ubb38\uc81c\ub97c \ud478\ub294\ub370 \ubcc4 \ub3c4\uc6c0\uc774 \uc548\ub41c\ub2e4. \uadf8\ub7f0 \ud798\uc740 \uadf8\ub0e5 \uc2dc\uac04\uc774 \uc5bc\ub9c8\ub098 \uc9c0\ub0ac\ub294\uc9c0 \uacc4\uc0b0\ud55c \ud6c4, \ub4f1\uac00\uc18d\ub3c4 \uc6b4\ub3d9 \uacf5\uc2dd 3\uc885\uc138\ud2b8\ub97c \uc0ac\uc6a9\ud574\uc11c \ubcc0\uc704\uc640 \uc18d\ub3c4\ub97c \uac04\ub2e8\ud788 \uc54c\uc544\ub0bc \uc218 \uc788\uae30 \ub54c\ubb38\uc774\ub2e4.<\/p>\n<p>        \uc6b0\ub9ac\uac00 \uad00\uc2ec\uc788\ub294\uac74 \uadf8 \ub2e4\uc74c\uc774\ub2e4. 2c \ub300\uc2e0\uc5d0 k\ub97c \uc4f0\uc790.<\/p>\n<p>        $F(x) = -kx$<\/p>\n<p>        \uc5ec\uae30\uc11c k\ub97c \ud0c4\uc131 \uacc4\uc218\ub77c\uace0 \ubd80\ub978\ub2e4. \ubb54\uac00 \uc774\ub798\ub193\uace0 \ubcf4\ub2c8 \ub72c\uae08\uc5c6\uc774 \ub118\uc5b4\uac14\ub2e4\ub294 \ub290\ub08c\uc774 \ub4e0\ub2e4.<\/p>\n<p>        \uc5b4\uca0c\ub4e0\uac04\uc5d0 \uc774\uac74 1\ucc28 \ubc29\uc815\uc2dd\uc774\uae30 \ub54c\ubb38\uc5d0 \ud480\uae30 \uc26c\uc6b8 \uac70\ub77c\uace0 \uc0dd\uac01\ud558\ub294\ub370, \uc6b0\ub9ac\uc5d0\uac90 $F=ma$\uac00 \uc788\uc73c\ub2c8\uae4c,<br \/>\n        <br \/>\n        $ma+kx=0$<br \/>\n        <br \/>\n        \uc774\ub807\uac8c \ub41c\ub2e4. \uadf8\ub9ac\uace0 \uc774 \ubc29\uc815\uc2dd\uc740 \uc544\uc8fc \uc720\uba85\ud55c 2\ucc28 \uc0c1\ubbf8\ubd84 \ubc29\uc815\uc2dd\uc774\ub2e4.<\/p>\n<p>        \uc774\uac83\ub4e4\uc740 \uad50\uacfc\uc11c\uc5d0 \ub098\uc624\ub294 \uc598\uae30\ub4e4\uc778\ub370, \uc774\uc81c \ud0c4\uc131\uacc4\uc218\uac00 \ubb54\uc9c0\uc5d0 \ub300\ud574 \uc870\uae08 \ub354 \uc0dd\uac01\ud574 \ubcf4\uc790. \ud0c4\uc131(Elasticity)\uc774\ub780 \uc5b4\ub5a4 \ud2b9\uc131\uc774\ub2e4. \uc774 \ud2b9\uc131\uc740, \uc5b4\ub5a4 \ubb3c\uccb4\uac00 \uc678\ubd80 \ud798\uc5d0 \ubc18\uc751\ud558\ub294 \ud2b9\uc131\uc774\ub2e4. \ub9cc\uc57d \uc544\ubb34 \ubc18\uc751\ub3c4 \ud558\uc9c0 \uc54a\ub294\ub2e4\uba74, \uc774\ub188\uc740 \uc6b0\ub9ac\uac00 \ud480 \uc218 \uc788\ub294 \ubb38\uc81c\uc758 \ubc94\uc8fc\uc5d0 \ub4e4\uc5b4\uac00\uc9c0 \uc54a\ub294\ub2e4. (\ub2e4\uc2dc \ub9d0\ud574\uc11c, \uc6b0\ub9b0 \uadf8\uac83\uc5d0 \ub300\ud574 \uc544\ubb34\uac83\ub3c4 \uc54c \uc218 \uc5c6\ub2e4\ub294 \ub73b\uc774\ub2e4.) \ud2b9\ud788, \uc774 \ud2b9\uc131\uc740 \uc678\ubd80 \ud798\uc774 \uc5b4\ub290\uc815\ub3c4 \ud55c\uacc4\ub97c \ub118\uc5b4\uac00\uc9c0 \uc54a\uc73c\uba74, \uc6d0\ub798 \uc788\ub358 \uc790\ub9ac\ub85c \ub418\ub3cc\uc544\uac00\ub294 \uc131\uc9c8\uc774 \uc788\ub2e4. \uc678\ubd80\uc5d0\uc11c \uc8fc\ub294 \ud798\uc774 \uac15\ud558\uba74 \uac15\ud560\uc218\ub85d \ub354 \ucee4\uc838\uc57c \ud55c\ub2e4. \ud0c4\uc131\ub825\uc740 \uc774\ub7f0\uc2dd\uc73c\ub85c \uc791\uc6a9\ud558\ub294 \ud798\uc774\uace0, \ud0c4\uc131\uacc4\uc218\ub294 \uc774 \ud798\uc774 \uc5bc\ub9c8\ub098 \ud06c\uac8c \uc791\uc6a9\ud558\ub294\uc9c0\ub97c \uc54c\ub824\uc8fc\ub294 \uc218\uc774\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1904_1\" id=\"footnote_link_1904_1\" onmouseout=\"tistoryFootnote.hide(1904,1)\" onmouseover=\"tistoryFootnote.show(this,1904,1)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          1<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><\/p>\n<p>        \ud0c4\uc131\ub825\uc740 \uc6d0\ub798 \uc788\ub358 \uc790\ub9ac\ub85c \ub418\ub3cc\uc544\uac00\ub824\ub294 \ud798\uc774\uae30 \ub54c\ubb38\uc5d0, \ud798\uacfc \uc815\ud655\ud788 \ubc18\ub300 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud55c\ub2e4. \ud558\uc9c0\ub9cc, \uc5b4\ub5a4 \uc774\uc0c1\ud55c \ubb3c\uc9c8\uc758 \uacbd\uc6b0 \uc791\uc6a9\ud55c \ud798\uc5d0 \ub300\ud574\uc11c \ub2e4\ub978 \ubc29\ud5a5\uc758 \ud798\uc774 \ubc1c\uc0dd\ud558\uae30\ub3c4 \ud55c\ub2e4. \uadf8\ub7f0 \uacbd\uc6b0\uc5d0\ub294 \uadf8\uac78 \uc2a4\ud2b8\ub808\uc2a4\ub77c\uace0 \ud55c\ub2e4. (\uc751\ub825\uc774\ub77c\uace0\ub3c4 \ud55c\ub2e4.)<br \/>\n        <br \/>\n        \uc774\ub7f0\uc2dd\uc73c\ub85c \uc791\uc6a9\ud558\ub294 \uacbd\uc6b0, \ud0c4\uc131\uacc4\uc218\ub294 \uc22b\uc790 \ud558\ub098\ub85c \ud45c\ud604\ub418\uc9c0 \uc54a\uac8c \ub41c\ub2e4. \uc774\ub7f4 \ub54c\uc5d0\ub294 \ud589\ub82c\ub85c \ud45c\uc2dc\ub418\ub294\ub370, \uadf8 \ud589\ub82c\uc744 \uc2a4\ud2b8\ub808\uc2a4 \ud150\uc11c\ub77c\uace0 \ud55c\ub2e4.<br \/>\n        <\/p>\n<div class=\"footnotes\">\n<ol class=\"footnotes\">\n<li id=\"footnote_1904_1\">\n           F=ma\uc5d0\uc11c m\uc744 \uac00\uc18d\ub3c4 \uacc4\uc218\ub77c\uace0 \ubd88\ub7ec\ub3c4 \ub41c\ub2e4. \ud558\uc9c0\ub9cc \ub9ce\uc740 \uc0ac\ub78c\ub4e4\uc740 \uac70\uae30\uc5d0 \uc9c8\ub7c9(mass)\uc774\ub77c\ub294 \uc774\ub984\uc744 \ubd99\uc5ec\ub450\uc5c8\ub2e4.<br \/>\n           <a href=\"#footnote_link_1904_1\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<\/ol>\n<\/div>\n<p><script type=\"text\/javascript\">\n         tistoryFootnote.add(1904,1,\"F=ma\\uc5d0\\uc11c m\\uc744 \\uac00\\uc18d\\ub3c4 \\uacc4\\uc218\\ub77c\\uace0 \\ubd88\\ub7ec\\ub3c4 \\ub41c\\ub2e4. \\ud558\\uc9c0\\ub9cc \\ub9ce\\uc740 \\uc0ac\\ub78c\\ub4e4\\uc740 \\uac70\\uae30\\uc5d0 \\uc9c8\\ub7c9(mass)\\uc774\\ub77c\\ub294 \\uc774\\ub984\\uc744 \\ubd99\\uc5ec\\ub450\\uc5c8\\ub2e4.\");\n        <\/script><\/p>\n<div style=\"width:100%;margin-top:30px;clear:both;height:30px\">\n<div style=\"width:31px;float:left;\">\n<a href=\"\/toolbar\/popup\/abuseReport\/?entryId=1904\" onclick=\"window.open(this.href, 'tistoryThisBlogPopup', 'width=550, height=510, toolbar=no, menubar=no, status=no, scrollbars=no'); return false;\"><br \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\uc2e0\uace0\" src=\"https:\/\/i0.wp.com\/t1.daumcdn.net\/tistory_admin\/static\/ico\/ico_spam_report.png\" style=\"border:0\"\/><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\uc5d0\ub108\uc9c0\uc5d0 \uad00\ud55c \uae00\uc744 \uc4f0\ub2e4 \ubcf4\ub2c8 \ud0c4\uc131\uacc4\uc218\uc5d0 \uad00\ud55c \uc124\uba85\uc744 \ud574\uc57c \ud560 \uac83 \uac19\ub2e4. \ud0c4\uc131\uacc4\uc218\ub294 \ubb3c\uccb4\uac00 \ubcc0\ud615\uc5d0 \ubc18\uc751\ud558\ub294 \uc815\ub3c4\ub97c \ub098\ud0c0\ub0b4\ub294 \uc218\uc774\ub2e4. &#8211; \uc6d0\ub798\ub294 \ud150\uc11c\ub2e4. \ud150\uc11c\ub294 \ub610 \ubb50\ub0d0\uace0 \ubb3c\uc73c\uc2e0\ub2e4\uba74, \uadf8\uc800 \uc6c3\uc9c0\uc694. \ud5d0. \ubcf5\uc7a1\ud55c \uc138\uc0c1\uc744 \uc774\ud574\ud558\ub294 \uac74 \uc5b4\ub824\uc6b4 \uc77c\uc774\ub2e4. \ubb3c\ub9ac\ud559 \ud558\ub294 \uc0ac\ub78c\ub4e4\ub3c4 \uadf8\uac74 \uc608\uc678\uac00 \uc544\ub2c8\uae30 \ub54c\ubb38\uc5d0, \ucd5c\ub300\ud55c \uc26c\uc6b4 \ubb38\uc81c\ub9cc \ud480\uae30 \uc704\ud574\uc11c \ubcf5\uc7a1\ud55c \ubb38\uc81c\ub97c \uc27d\uac8c \ub9cc\ub4dc\ub294 \uae30\uc220\uc744 \uc775\ud614\ub2e4. \uc704\uce58 \uc5d0\ub108\uc9c0\uc640 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-9077","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2mp","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9077"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9077\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9077"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}