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    การเคลื่อนที่แบบวงกลม

    การเคลื่อนที่แบบวงกลม



    การเคลื่อนที่ที่มีแนวการเคลื่อนที่เป็นวงกลมหรือส่วนของวงกลม เรียกการเคลื่อที่แบบนี้ว่า การเคลื่อนที่แบบวงกลม ( cirucular motion ) เช่น การเข้าโค้งของรถ การโคจรรอบโลกของดาวเทียม

    การเคลื่อนที่แบบวงกลมที่มีอัตราเร็วคงตัว เรียกว่า การเคลื่อนที่แบบวงกลมสม่ำเสมอ (uniform circular motion) นั่นคือ การเคลื่อนที่ที่มีขนาดของความเร็วเท่าเดิม สม่ำเสมอ แต่ทิศทางเปลี่ยนไปทีละน้อย

    แรงกระทำต่อวัตถุซึ่งเคลื่อที่ในแนวงกลม และมีทิศทางเข้าสู่ศูนย์กลางของแนววงกลมเรียกว่า แรงสู่ศูนย์กลาง ( centripetal force )

    การเคลื่อที่แบบวงกลมจะมีลักษณะเฉพาะคือเป็นการเคลื่อนที่แบบเลื่อนตำแหน่งที่มีแนวการเคลื่อนที่เป็นรูปวงกลม ช่วงเวลาที่วัตถุใช้ในการเคลื่อนที่ครบ 1 รอบ เรียกว่า คาบ ( preiod ) ใช้สัญลักษณ์ มีหน่วยเป็น วินาที

    จำนวนรอบที่วัตถุเคลื่อนที่ได้ใน 1 หน่วยเงลา เรียกว่า ความถี่ ( frequency ) ใช้สัญลักษณ์ มีหน่วยคือ รอบต่อวินาที หรือ เฮิรตซ์




    ระยะทางที่วัตถุเคลื่อนที่เมื่อครบ 1 รอบ คือความยางชองเส้นรอบวง ดังนั้นการหาอัตราเร็วจึงหาได้จาก




    อ้างอิง

    http://www.myfirstbrain.com

    http://www.scimath.org

    วิทยาศาสตร์อุตสาหกรรม

    Comments

    /groups/poly_ordinarycourse/search/index.rss?tag=hotlist/groups/poly_ordinarycourse/search/?tag=hotWhat’s HotHotListHot!?tag=hot2/groups/poly_ordinarycourse/sidebar/HotListRepairing bad index entryetrenuKrueda Kaewthong2014-05-07 02:10:40+00:002014-05-07 02:10:40updated189etrenuKrueda Kaewthong2014-03-11 03:23:42+00:002014-03-11 03:23:42updated188etrenuKrueda Kaewthong2014-02-07 03:10:49+00:002014-02-07 03:10:49updated187etrenuKrueda Kaewthong2013-10-30 08:51:03+00:002013-10-30 08:51:03updated186etrenuKrueda Kaewthong2013-10-30 08:44:53+00:002013-10-30 08:44:53updated185etrenuKrueda Kaewthong2013-10-30 08:42:05+00:002013-10-30 08:42:05updated184etrenuKrueda Kaewthong2013-09-24 08:52:12+00:002013-09-24 08:52:12updated183etrenuKrueda Kaewthong2013-09-23 03:49:24+00:002013-09-23 03:49:24updated182etrenuKrueda Kaewthong2013-09-23 03:49:02+00:002013-09-23 03:49:02updated181etrenuKrueda Kaewthong2013-09-23 03:41:28+00:002013-09-23 03:41:28updated180etrenuKrueda Kaewthong2013-09-23 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01:21:38+00:002010-10-01 01:21:38updated24somchit_chaSomchit Chapan2010-10-01 01:20:58+00:002010-10-01 01:20:58updated23somchit_chaSomchit Chapan2010-10-01 01:16:35+00:002010-10-01 01:16:35updated22Removed tag - สาetrenuKrueda Kaewthong2010-09-30 15:09:22+00:002010-09-30 15:09:22removeTag21Added tag - สาetrenuKrueda Kaewthong2010-09-30 15:07:45+00:002010-09-30 15:07:45addTag20Added tag - courseetrenuKrueda Kaewthong2010-09-30 15:07:33+00:002010-09-30 15:07:33addTag19Added tag - technicetrenuKrueda Kaewthong2010-09-30 15:07:18+00:002010-09-30 15:07:18addTag18Added tag - polytechnicetrenuKrueda Kaewthong2010-09-30 15:07:09+00:002010-09-30 15:07:09addTag17Added tag - polyetrenuKrueda Kaewthong2010-09-30 15:06:54+00:002010-09-30 15:06:54addTag16etrenuKrueda Kaewthong2010-09-30 15:06:41+00:002010-09-30 15:06:41updated15etrenuKrueda Kaewthong2010-09-30 12:46:31+00:002010-09-30 12:46:31updated14ptpichetPichet Dokrak2010-09-30 08:43:10+00:002010-09-30 08:43:10updated13ptsombonSomboon 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(poly_ordinarycourse)/groups/poly_ordinarycourse/wiki/welcome/_poly_ordinarycourse.htmlKrueda Kaewthong189 updatesหมวดวิชาสามัญ (poly_ordinarycourse) หมวดวิชาสามัญ ภาคเรียนที่ 2 ปวช.1/ 2000-1101 ภาษาไทยเพื่อการอาชีพ 1 2000-1202 ภาษาอังกฤษเพื่อการสื่อสาร...Falseetrenu2014-03-11T03:23:42+00:00Repairing bad index entrysomchit_chaSomchit Chapan2014-05-07 02:30:18+00:002014-05-07 02:30:18updated21somchit_chaSomchit Chapan2011-05-13 08:29:31+00:002011-05-13 08:29:31updated20somchit_chaSomchit Chapan2011-05-13 08:28:51+00:002011-05-13 08:28:51updated19somchit_chaSomchit Chapan2011-05-13 08:25:52+00:002011-05-13 08:25:52updated18somchit_chaSomchit Chapan2011-05-13 08:23:38+00:002011-05-13 08:23:38updated17somchit_chaSomchit Chapan2011-05-13 08:20:58+00:002011-05-13 08:20:58updated16somchit_chaSomchit Chapan2011-05-13 08:19:04+00:002011-05-13 08:19:04updated15somchit_chaSomchit Chapan2011-05-13 08:17:13+00:002011-05-13 08:17:13updated14somchit_chaSomchit Chapan2011-05-13 08:14:28+00:002011-05-13 08:14:28updated13somchit_chaSomchit Chapan2011-05-13 08:13:05+00:002011-05-13 08:13:05updated12somchit_chaSomchit Chapan2011-05-13 08:11:23+00:002011-05-13 08:11:23updated11somchit_chaSomchit Chapan2011-05-13 08:09:24+00:002011-05-13 08:09:24updated10somchit_chaSomchit Chapan2011-05-13 08:06:28+00:002011-05-13 08:06:28updated9somchit_chaSomchit Chapan2011-05-13 08:04:14+00:002011-05-13 08:04:14updated8Added tag - hotsomchit_chaSomchit Chapan2011-05-13 08:02:43+00:002011-05-13 08:02:43addTag7somchit_chaSomchit Chapan2011-05-13 08:01:08+00:002011-05-13 08:01:08updated6somchit_chaSomchit Chapan2011-05-13 07:58:53+00:002011-05-13 07:58:53updated5somchit_chaSomchit Chapan2011-05-13 07:57:16+00:002011-05-13 07:57:16updated4somchit_chaSomchit Chapan2011-05-13 07:54:29+00:002011-05-13 07:54:29updated3somchit_chaSomchit Chapan2011-05-12 04:04:28+00:002011-05-12 04:04:28updated2First createdsomchit_chaSomchit Chapan2011-03-04 07:54:07+00:002011-03-04 07:54:07created1wiki2011-05-13T08:29:31+00:00groups/poly_ordinarycourse/wiki/2954cFalseหน่วยที่ 5 เมทริกซ์/groups/poly_ordinarycourse/wiki/2954c/_5_.htmlSomchit Chapan21 updatesหน่วยที่ 5 เมทริกซ์ [untitled.JPG][image] [image][untitled.JPG][image][image][image][image][untitled.JPG][untitled.JPG][image][image][image][image][untitled.JPG][i...Falsesomchit_cha2011-05-13T08:29:31+00:00hot/groups/poly_ordinarycourse/search/index.rss?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcomelist/groups/poly_ordinarycourse/search/?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcomeRecent ChangesRecentChangesListUpdates?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcome0/groups/poly_ordinarycourse/sidebar/RecentChangesListmodifiedDateallRecent ChangesRecentChangesListUpdateswiki/welcomeNo recent changes.reverse5search