ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬Ôڹ⻬ˮƽÃæÉÏÓÐÒ»ÖÊÁ¿Îª m¡¢³¤¶ÈΪ L µÄľ°å A£¬Ä¾°åµÄÓҶ˵ã·ÅÓÐÒ»ÖÊÁ¿Îª 3m µÄÎï¿é B(¿ÉÊÓΪÖʵ㣩£¬Ä¾°å×ó²àµÄˮƽÃæÉÏÓÐÒ»Îï¿é C¡£µ±Îï¿é C ÒÔˮƽÏòÓҵijõËÙ¶È v0Óëľ°å·¢Éúµ¯ÐÔÅöײºó£¬Îï¿é B Ç¡ºÃ²»»á´Ó A ÉϵôÏÂÀ´£¬ÇÒ×îÖÕÎï¿é C Óë A µÄËÙ¶ÈÏàͬ¡£²»¼Æ C Óë A Åöײʱ¼ä£¬ÈýÎïÌåʼÖÕÔÚÒ»Ö±ÏßÉÏÔ˶¯£¬Çó:

(1)Îï¿é C µÄÖÊÁ¿ mc;

(2)ľ°å A Óë B ¼äµÄ¶¯Ä¦²ÁÒòÊý ¦Ì¡£

¡¾´ð°¸¡¿£¨1£©2m£¨2£©

¡¾½âÎö¡¿£¨1£©Îï¿é C Óëľ°å A ·¢ÉúÅöײµÄ¹ý³Ì£¬Óɶ¯Á¿Êغ㶨ÂÉÓëÄÜÁ¿Êغ㶨Âɵãº

ľ°å A ºÍÎï¿é B Ï໥×÷Óùý³Ì£¬Óɶ¯Á¿Êغ㶨ÂɵÃ

ÓÉ×îÖÕÎï¿é C Óë A µÄËÙ¶ÈÏàͬ¿ÉÖªvC=v

ÁªÁ¢µÃmC=2m

£¨2£©Ä¾°å A ºÍÎï¿é B Ï໥×÷Óùý³Ì£¬ÓÉÄÜÁ¿ÊغãµÃ

½âµÃ

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø