ÌâÄ¿ÄÚÈÝ
ÔÚµçÊÓ½ÚÄ¿ÖÐ,ÎÒÃdz£³£ÄÜ¿´µ½Ò»ÖÖ¾«²ÊµÄË®ÉÏÔ˶¯¡ª¡ª»¬Ë®°å.ÈçͼËùʾ,Ô˶¯Ô±ÔÚ¿ìͧµÄˮƽǣÒýÏÂ,½Å̤ÇãỬ°åÔÚË®ÉÏÔÈËÙ»¬ÐÐ.É軬°åÊǹ⻬µÄ,»¬°åµÄ´¥Ë®Ãæ»ýΪS,»¬°åÓëˮƽ·½ÏòµÄ¼Ð½ÇΪ¦È(»¬°åÇ°¶Ȩ̈ÆðµÄ½Ç¶È),Ë®µÄÃܶÈΪD.ÀíÂÛÑо¿±íÃ÷£ºË®¶Ô»¬°åµÄ×÷ÓÃÁ¦´óСΪN=DSv2sin2¦È,ʽÖеÄvΪ¿ìͧµÄÇ£ÒýËÙ¶È.ÈôÈ˵ÄÖÊÁ¿Îªm,Ôò¿ìͧµÄˮƽǣÒýËÙ¶Èv=_____________,ÔÚÉÏÊöÌõ¼þÏÂ,¿ìͧ¶ÔÔ˶¯Ô±µÄÇ£Òý¹¦ÂÊΪ_____________.![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241139281872451.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241139281872451.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113928202316.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113928218631.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113928234459.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824113928218631.gif)
ÓÉͼ¿ÉÖª£ºNcos¦È=mg
½«N=DSv2sin2¦È´úÈë¼´¿É.![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241139282651501.jpg)
Ç£Òý¹¦ÂÊΪT¡¤v=mgtan¦È¡¤v´úÈë¼´¿É.
½«N=DSv2sin2¦È´úÈë¼´¿É.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241139282651501.jpg)
Ç£Òý¹¦ÂÊΪT¡¤v=mgtan¦È¡¤v´úÈë¼´¿É.
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿