ÌâÄ¿ÄÚÈÝ
ÓîÖæ·É´¬ÊÇÈËÀà½øÐпռä̽Ë÷µÄÖØÒªÉ豸£¬µ±·É´¬Éý¿Õ½øÈë¹ìµÀºó£¬ÓÉÓÚ¸÷ÖÖÔÒò¾³£»á³öÏÖ²»Í¬³Ì¶ÈµÄÆ«Àë¹ìµÀÏÖÏó¡£Àë×ÓÍƽøÆ÷ÊÇÐÂÒ»´úº½Ì춯Á¦×°Öã¬Ò²¿ÉÓÃÓÚ·É´¬×Ë̬µ÷ÕûºÍ¹ìµÀÐÞÕý£¬ÆäÔÀíÈçͼ1Ëùʾ£¬Ê×ÏÈÍƽø¼Á´ÓͼÖеÄP´¦±»×¢È룬ÔÚA´¦±»µçÀë³öÕýÀë×Ó£¬½ðÊô»·B¡¢CÖ®¼ä¼ÓÓк㶨µçѹ£¬ÕýÀë×Ó±»B¡¢C¼äµÄµç³¡¼ÓËÙºó´ÓC¶Ë¿ÚÅç³ö£¬´Ó¶øʹ·É´¬»ñµÃÍƽø»ò×Ë̬µ÷ÕûµÄ·´³å¶¯Á¦¡£
¼ÙÉè×ÜÖÊÁ¿ÎªMµÄÎÀÐÇ£¬ÕýÔÚÒÔËÙ¶ÈVÑØMP·½ÏòÔ˶¯£¬ÒÑÖªÏÖÔÚµÄÔ˶¯·½ÏòÓëÔ¤¶¨·½ÏòMN³É¦È½Ç£¬Èçͼ2Ëùʾ¡£ÎªÁËʹ·É´¬»Øµ½Ô¤¶¨µÄ·ÉÐз½ÏòMN£¬·É´¬ÆôÓÃÍƽøÆ÷½øÐе÷Õû¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241135480864244.gif)
ÒÑÖªÍƽøÆ÷B¡¢C¼äµÄµçѹ´óСΪU£¬´øµçÀë×Ó½øÈëBʱµÄËٶȺöÂÔ²»¼Æ£¬¾¼ÓËÙºóÐγɵçÁ÷Ç¿¶ÈΪIµÄÀë×ÓÊø´ÓC¶Ë¿ÚÅç³ö£¬Èôµ¥¸öÀë×ÓµÄÖÊÁ¿Îªm£¬µçÁ¿Îªq£¬ºöÂÔÀë×Ó¼äµÄÏ໥×÷ÓÃÁ¦£¬ºöÂÔ¿Õ¼äÆäËûÍâÁ¦µÄÓ°Ï죬ºöÂÔÀë×ÓÅçÉä¶ÔÎÀÐÇÖÊÁ¿µÄÓ°Ïì¡£ÇëÍê³ÉÏÂÁмÆËãÈÎÎñ£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241135481483567.gif)
£¨1£©ÕýÀë×Ó¾µç³¡¼ÓËٺ󣬴ÓC¶Ë¿ÚÅç³öµÄËÙ¶ÈvÊǶà´ó£¿
£¨2£©ÍƽøÆ÷¿ªÆôºó·É´¬Êܵ½µÄƽ¾ùÍÆÁ¦FÊǶà´ó£¿
£¨3£©Èç¹ûÑØ´¹Ö±ÓÚ·É´¬ËÙ¶ÈVµÄ·½Ïò½øÐÐÍƽø£¬ÇÒÍƽøÆ÷¹¤×÷ʱ
¼ä¼«¶Ì£¬ÎªÁËʹ·É´¬»Øµ½Ô¤¶¨µÄ·ÉÐз½Ïò£¬Àë×ÓÍƽøÆ÷ÅçÉä
³öµÄÁ£×ÓÊýNΪ¶àÉÙ£¿
¼ÙÉè×ÜÖÊÁ¿ÎªMµÄÎÀÐÇ£¬ÕýÔÚÒÔËÙ¶ÈVÑØMP·½ÏòÔ˶¯£¬ÒÑÖªÏÖÔÚµÄÔ˶¯·½ÏòÓëÔ¤¶¨·½ÏòMN³É¦È½Ç£¬Èçͼ2Ëùʾ¡£ÎªÁËʹ·É´¬»Øµ½Ô¤¶¨µÄ·ÉÐз½ÏòMN£¬·É´¬ÆôÓÃÍƽøÆ÷½øÐе÷Õû¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241135480864244.gif)
ÒÑÖªÍƽøÆ÷B¡¢C¼äµÄµçѹ´óСΪU£¬´øµçÀë×Ó½øÈëBʱµÄËٶȺöÂÔ²»¼Æ£¬¾¼ÓËÙºóÐγɵçÁ÷Ç¿¶ÈΪIµÄÀë×ÓÊø´ÓC¶Ë¿ÚÅç³ö£¬Èôµ¥¸öÀë×ÓµÄÖÊÁ¿Îªm£¬µçÁ¿Îªq£¬ºöÂÔÀë×Ó¼äµÄÏ໥×÷ÓÃÁ¦£¬ºöÂÔ¿Õ¼äÆäËûÍâÁ¦µÄÓ°Ï죬ºöÂÔÀë×ÓÅçÉä¶ÔÎÀÐÇÖÊÁ¿µÄÓ°Ïì¡£ÇëÍê³ÉÏÂÁмÆËãÈÎÎñ£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241135481483567.gif)
£¨1£©ÕýÀë×Ó¾µç³¡¼ÓËٺ󣬴ÓC¶Ë¿ÚÅç³öµÄËÙ¶ÈvÊǶà´ó£¿
£¨2£©ÍƽøÆ÷¿ªÆôºó·É´¬Êܵ½µÄƽ¾ùÍÆÁ¦FÊǶà´ó£¿
£¨3£©Èç¹ûÑØ´¹Ö±ÓÚ·É´¬ËÙ¶ÈVµÄ·½Ïò½øÐÐÍƽø£¬ÇÒÍƽøÆ÷¹¤×÷ʱ
¼ä¼«¶Ì£¬ÎªÁËʹ·É´¬»Øµ½Ô¤¶¨µÄ·ÉÐз½Ïò£¬Àë×ÓÍƽøÆ÷ÅçÉä
³öµÄÁ£×ÓÊýNΪ¶àÉÙ£¿
£¨1£©v=
£»£¨2£©
=I
£»£¨3£©N="M¦¤V/mv" =![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548258671.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548164502.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548180205.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548211518.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548258671.gif)
£¨1£©qU =
mv2 v=
¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
£¨2£©£¨¹²4·Ö£©ÒÔtÃëÄÚÅçÉäµÄÀë×Ó£¨nm£©ÎªÑо¿¶ÔÏó£¬Ó¦Óö¯Á¿¶¨ÀíÓУº
¡¤t=nmv¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
ÓÖ¡ßI="nq/t" ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡à
=I
£¨ÎªnmÊܵ½µÄƽ¾ù³åÁ¦£©¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡àÓÉÅ£¶ÙµÚÈý¶¨ÂÉÖª£¬·É´¬Êܵ½µÄƽ¾ù·´³åÁ¦´óСҲΪI
¡¡¡(1·Ö£©
£¨3£©£¨¹²7·Ö£©
·É´¬·½Ïòµ÷ÕûÇ°ºó£¬ÆäËٶȺϳÉʸÁ¿ÈçͼËùʾ(2·Ö£©£º
¡à¦¤V=Vtan¦È¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡ßϵͳ×ܶ¯Á¿Êغ㠣¨¶øÇÒ:M >>N m£©
¡àM¦¤V=N m v ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡àN="M¦¤V/mv" =
¡¡¡¡¡¡¡¡¡¡¡¡(3·Ö£©
ÌâÐÍ¡¿¼ÆËãÌâ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548273225.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548164502.gif)
£¨2£©£¨¹²4·Ö£©ÒÔtÃëÄÚÅçÉäµÄÀë×Ó£¨nm£©ÎªÑо¿¶ÔÏó£¬Ó¦Óö¯Á¿¶¨ÀíÓУº
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548180205.gif)
ÓÖ¡ßI="nq/t" ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡à
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548180205.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548211518.gif)
¡àÓÉÅ£¶ÙµÚÈý¶¨ÂÉÖª£¬·É´¬Êܵ½µÄƽ¾ù·´³åÁ¦´óСҲΪI
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548211518.gif)
£¨3£©£¨¹²7·Ö£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241135483823817.gif)
·É´¬·½Ïòµ÷ÕûÇ°ºó£¬ÆäËٶȺϳÉʸÁ¿ÈçͼËùʾ(2·Ö£©£º
¡à¦¤V=Vtan¦È¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡ßϵͳ×ܶ¯Á¿Êغ㠣¨¶øÇÒ:M >>N m£©
¡àM¦¤V=N m v ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(1·Ö£©
¡àN="M¦¤V/mv" =
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113548258671.gif)
ÌâÐÍ¡¿¼ÆËãÌâ
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿