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#1
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⨷Âìá¹ÇÇÔ·Âì¤Ó¹Ç³à¡ÕèÂǡѺ§Ò¹ã¹á¹Ç´Ô觤ÃѺ
¨§¤Ó¹Ç³§Ò¹·Õè¡ÃзӵéÒ¹áçâ¹éÁ¶èǧâ´Âà¤Ã×èͧÊÙº·Õè¨èÒ¹éÓÁѹàª×éÍà¾ÅÔ§ 600 ÅԵà à¢éÒÊÙè¶Ñ§ÍÂÙèÊÙ§ 20 àÁµÃ à˹×ÍÃдѺ·Õè¹éÓÁѹàé¢éÒà¤Ã×èͧÊÙº ¹éÓÁѹ˹Öè§ÅÙ¡ºÒÈ¡ìૹµÔàÁµÃÁÕÁÇÅ 0.82 ¡ÃÑÁ 1 ÅÔµÃÁÕ»ÃÔÁÒ³à·èҡѺ 1000 ÅÙ¡ºÒÈ¡ìૹµÔàÁµÃ (¡Ó˹´ãËé g=9.8m/$s^{2}$)
¶éÒ¼Áâ¾Êµì¼Ô´·Õè¢ÍÍÀÑ´éǹФÃѺ ¼ÁäÁèÃÙé¨Ðâ¾Êµì⨷Âìá¹ÇÇÔ·Âì¤Ó¹Ç³µÃ§ä˹ áµèÍѹ¹Õé¼ÁÇèÒÃдѺÁ.µé¹
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¼ÁäÁè¤èÍÂà¡è§¤³ÔµÈÒʵÃìáµè¡ÓÅѧ¾ÂÒÂÒÁ½Ö¡¤ÃѺ ¶éÒ¼Á¾ÅÒ´¼Á¢Íâ·É´éǹФÃѺ 21 àÁÉÒ¹ 2012 20:58 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 2 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ ClaudeZ à˵ؼÅ: à¢Õ¹àÅ¢ªÕé¡ÓÅѧ¼Ô´ |
#2
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ËÒ¹éÓ˹ѡ¢Í§¹éÓÁѹ 600 ÅԵà (áç·Õèµéͧ¡ÃзÓ)
¤Ù³´éÇÂÃÐÂÐ 20 àÁµÃ «Öè§à»ç¹ÃÐÂзҧµÒÁá¹Çáç |
#3
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ÍÂÒ¡ÃÙéÇèÒËҡѹä´éà·èÒäËÃèÍФÃѺ à©ÅÂÁѹ§§àÍÒÁÒ¡æ¼ÁàÅÂäÁè¤èͨÐÁÑè¹ã¨ã¹µÑÇàÅ¢
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¼ÁäÁè¤èÍÂà¡è§¤³ÔµÈÒʵÃìáµè¡ÓÅѧ¾ÂÒÂÒÁ½Ö¡¤ÃѺ ¶éÒ¼Á¾ÅÒ´¼Á¢Íâ·É´éǹФÃѺ |
#4
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$ m = dv = 0.82 \times 600 = 492$ $kg$
$F = mg = 492 \times 9.8 = 4.821$ $kN$ $W = Fs = 4.821 \times 20 = 96.432$ $kJ$ |
#5
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ÍëÍà¢éÒã¨áÅéǤÃѺ ¼Áá¤èÅ×Áà»ÅÕè¹˹èÇÂà»ç¹ Kg (ãªé g ÂÑ´ä»ÍÂèÒ§à´ÕÂÇ)
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¼ÁäÁè¤èÍÂà¡è§¤³ÔµÈÒʵÃìáµè¡ÓÅѧ¾ÂÒÂÒÁ½Ö¡¤ÃѺ ¶éÒ¼Á¾ÅÒ´¼Á¢Íâ·É´éǹФÃѺ |
#6
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à¡×ͺ¨Ð¼Ô´ä»àËÁ×͹¡Ñ¹Å×Á´Ù 600 ÅԵà 555+
⨷Âì¢é͹Õé§Ò¹µÔ´ÅºËÃ×ÍäÁèµÔ´ÅºÍèÒ¤èÐ ¶éÒ§Ò¹µÔ´Åº¤×ÍáçÊǹ·Ò§¡ÑºÃÐÂзҧãªèäËÁ¤èÐ áµè¢é͹Õé¹èÒ¨ÐäÁèµÔ´Åº ãªèäËÁ¤èÐ äÁèá¹è㨠|
#7
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¢é͹Õé§Ò¹·ÕèàÃÒ·Óà»ç¹ºÇ¡¤ÃѺ ÁÕÇÔ¸Õ¡Òô٧èÒÂæ¤×ͶéÒàÃÒÍÍ¡áç¡Çѵ¶ØµéÒ¹áçâ¹éÁ¶èǧ¢Öé¹ä»¨Ðä´é§Ò¹ à»ç¹ºÇ¡ áµè¶éÒàÃÒÍÍ¡áçẺàËÁ×͹¡ÑºËÂè͹¢Í§Å§ ¡ç¨Ðä´é§Ò¹à»ç¹Åº¤ÃѺ
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#8
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ÍéÍ ¢Íº¤Ø³¤èÐ
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