ÌâÄ¿ÄÚÈÝ
![](http://thumb.1010pic.com/pic3/upload/images/201406/52/db8dba3c.png)
A¡¢ÔÚÔ˶¯Ô±Á½ÊÖ¼ä¾àÀëÔö´ó¹ý³ÌÖУ¬Á½¸ùµõ´øµÄÀÁ¦¾ùÔö´ó | B¡¢ÔÚÔ˶¯Ô±Á½ÊÖ¼ä¾àÀëÔö´ó¹ý³ÌÖУ¬Á½¸ùµõ´øÀÁ¦µÄºÏÁ¦Ôö´ó | C¡¢Ô˶¯Ô±¾²Ö¹²»¶¯Ê±£¬´¦ÓÚ³¬ÖØ״̬ | D¡¢Ô˶¯Ô±¾²Ö¹²»¶¯Ê±£¬Ã¿¸ùµõ´øËùÊܵÄÀÁ¦´óС¶¼µÈÓÚÔ˶¯Ô±ÖØÁ¦µÄÒ»°ë |
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
Èçͼ¼×£¬Çã½ÇΪ37¡ãµÄбÃæÊÇÓÉÒ»ÖÖÌØÊâ²ÄÁÏÖÆ×÷¶ø³É£¬Æä×ܳ¤¶ÈΪ£¬µ×¶Ë¹Ì¶¨Ò»¾¢¶ÈϵÊýΪk¡¢Ô³¤ÎªlµÄÇᵯ»É£¬µ¯»ÉÁíÒ»¶ËÓëÖÊÁ¿ÎªmµÄÎïÌåÏàÁ¬½Ó£¬ÎïÌåÓëбÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¦ÌËæ¾àµ×¶ËOµãµÄ¾àÀëx±ä»¯¹ØϵÈçͼÒÒËùʾ£¬¼ÙÉè×î´ó¾²Ä¦²ÁÁ¦µÈÓÚ»¬¶¯Ä¦²ÁÁ¦£¨sin37¡ã=0.6£¬cos37¡ã=0.8£©£®ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
![](http://thumb.1010pic.com/pic3/upload/images/201405/63/4b3949fb.png)
![](http://thumb.1010pic.com/pic3/upload/images/201405/63/4b3949fb.png)
A¡¢²»ÂÛkΪºÎÖµ£¬ÎïÌ嶼²»Äܾ²Ö¹ÔÚбÃæÖеã | ||
B¡¢Èôk=
| ||
C¡¢Èôk=
| ||
D¡¢Èôk=
|
¡°Ì½¾¿Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéÔÀíÊǵÈЧÔÀí£¬ÆäµÈЧÐÔÊÇÖ¸£¨¡¡¡¡£©
A¡¢Ê¹Á½·ÖÁ¦ÓëºÏÁ¦Âú×ãƽÐÐËıßÐζ¨Ôò | B¡¢Ê¹ÏðƤ½îÓëϸÉþÌ׵ĽáµãÁ½´Î¶¼ÓëijµãOÖØºÏ | C¡¢Ê¹Á½´ÎÏðƤ½îÉí³¤µÄ³¤¶ÈÏàµÈ | D¡¢°Ñµ¯»É³Ó¶¼Àµ½Ïàͬ¿Ì¶È |
![](http://thumb.1010pic.com/pic3/upload/images/201406/52/281940a9.png)
A¡¢¶¤×ÓBµÄλÖÃÈƽáµãO˳ʱÕëת¹ýÒ»¶¨½Ç¶È£¬ÇÒOB³¤¶È±ä´ó | B¡¢¶¤×ÓBµÄλÖÃÈƽáµãO˳ʱÕëת¹ýÒ»¶¨½Ç¶È£¬ÇÒOB³¤¶È±äС | C¡¢¶¤×ÓBµÄλÖÃÈƽáµãOÄæʱÕëת¹ýÒ»¶¨½Ç¶È£¬ÇÒOB³¤¶È±ä´ó | D¡¢¶¤×ÓBµÄλÖÃÈƽáµãOÄæʱÕëת¹ýÒ»¶¨½Ç¶È£¬ÇÒOB³¤¶È±äС |
ÈçͼËùʾ£¬»¥Ïà´¹Ö±µÄÁ½¸ö·ÖÁ¦F1¡¢F2£¬½«F2ÈÆOµã˳ʱÕëÐýתÖÁºÍF1Öغϣ¬Ôò£¨¡¡¡¡£©
![](http://thumb.1010pic.com/pic3/upload/images/201408/150/637be426.png)
![](http://thumb.1010pic.com/pic3/upload/images/201408/150/637be426.png)
A¡¢ºÏÁ¦ÔÚ¼õС£¬µ«·½Ïò²»±ä | B¡¢ºÏÁ¦ÔÚ¼õС£¬Í¬Ê±·½ÏòÔڸıä | C¡¢ºÏÁ¦ÔÚÔö´ó£¬µ«·½Ïò²»±ä | D¡¢ºÏÁ¦ÔÚÔö´ó£¬Í¬Ê±·½ÏòÔڸıä |
ijÎïÌåÊܵ½ËĸöÁ¦µÄ×÷Óöø´¦ÓÚ¾²Ö¹×´Ì¬£¬±£³ÖÆäÖÐÈý¸öÁ¦µÄ´óСºÍ·½Ïò¾ù²»±ä£¬Ê¹ÁíÒ»¸ö´óСΪFµÄÁ¦·½Ïòת¹ý90¡ã£¬ÔòÓûʹÎïÌåÈÔÄܱ£³Ö¾²Ö¹×´Ì¬£¬±ØÐëÔÙ¼ÓÉÏÒ»¸ö´óСΪ¶àÉÙµÄÁ¦£¨¡¡¡¡£©
A¡¢F | ||
B¡¢
| ||
C¡¢2F | ||
D¡¢3F |
Á½¸ö¹²µãÁ¦µÄºÏÁ¦ÊÇ100N£¬ÆäÖÐÒ»·ÖÁ¦´óСÊÇ60N£¬ÔòÁíÒ»ºÏÁ¦´óС¿ÉÄÜÊÇ£¨¡¡¡¡£©
A¡¢0N | B¡¢30N | C¡¢60N | D¡¢180N |