ÌâÄ¿ÄÚÈÝ
Æû³µ·¢¶¯»úµÄ¶î¶¨¹¦ÂÊP0=150kW£¬Æû³µµÄÖÊÁ¿m=5.0¡Á103©K£¬Æû³µÔÚˮƽ·ÃæÉÏÐÐʻʻʱ£¬×èÁ¦ÊdzµÖصÄk=0.10±¶£¬ÖØÁ¦¼ÓËÙ¶Èg=10m/s2£®£¨ËùÓмÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨1£©ÈôÆû³µ±£³Ö¶î¶¨¹¦Âʲ»±ä´Ó¾²Ö¹Æô¶¯£¬µ±³µËÙΪv1=10m/sʱÆä¼ÓËÙ¶Èa1ÊǶà´ó£¿
£¨2£©ÈôÆû³µ´Ó¾²Ö¹¿ªÊ¼£¬±£³ÖÒÔa="1.0" m/s2µÄ¼ÓËÙ¶È×öÔȼÓËÙÖ±ÏßÔ˶¯£¬Î¬³ÖÕâÒ»¹ý³ÌµÄʱ¼ätÊǶ೤£¿ÕâÒ»¹ý³ÌÖÐÆû³µÇ£ÒýÁ¦×ö¹¦WÊǶàÉÙ£¿
£¨1£©ÈôÆû³µ±£³Ö¶î¶¨¹¦Âʲ»±ä´Ó¾²Ö¹Æô¶¯£¬µ±³µËÙΪv1=10m/sʱÆä¼ÓËÙ¶Èa1ÊǶà´ó£¿
£¨2£©ÈôÆû³µ´Ó¾²Ö¹¿ªÊ¼£¬±£³ÖÒÔa="1.0" m/s2µÄ¼ÓËÙ¶È×öÔȼÓËÙÖ±ÏßÔ˶¯£¬Î¬³ÖÕâÒ»¹ý³ÌµÄʱ¼ätÊǶ೤£¿ÕâÒ»¹ý³ÌÖÐÆû³µÇ£ÒýÁ¦×ö¹¦WÊǶàÉÙ£¿
£¨1£©2.0m/s2£¨2£©15s£»![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005153997529.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005153997529.png)
ÊÔÌâ·ÖÎö£ºÆû³µÔ˶¯ÖÐËùÊܵÄ×èÁ¦´óСΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051540131217.png)
£¨1£©µ±Æû³µµÄËÙ¶ÈΪv1=10m/sʱµÄÇ£ÒýÁ¦ÎªF1,¸ù¾Ý¹¦Âʹ«Ê½P0=F1v1 µÃ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051540281203.png)
¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂɵÃ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005154044663.png)
Æû³µµÄ¼ÓËÙ¶ÈΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051540591840.png)
£¨2£©µ±Æû³µÒԺ㶨¼ÓËÙ¶Èa=1.0m/s2ÔȼÓËÙÔ˶¯Ê±£¬Æû³µµÄÇ£ÒýÁ¦ÎªF£¬
¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂɵÃ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005154075633.png)
´ËʱÆû³µµÄÇ£ÒýÁ¦
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051541061588.png)
Æû³µÔȼÓËÙÔ˶¯µÄʱ¼äΪt£¬µ±
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005154122407.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051541371277.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005154153815.png)
Æû³µµÄλÒÆÊÇ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250051541841062.png)
Æû³µÇ£ÒýÁ¦×ö¹¦Îª
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005154200808.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿