ÌâÄ¿ÄÚÈÝ

ÎÒ¹ú ¡°º£¼à75¡±ºÅºÍ¡°º£¼à84¡±ºÅΪά»¤ÎÒ¹úÁ캣Ö÷Ȩ£¬·îÃü¸°ÄϺ£»ÆÑÒµºº£Óò¿ªÊ¼¶ÔÎÒ¹úÓæ´¬Ö´Ðл¤ÓæÈÎÎñ£®Ä³ÈÕÇ峿£¬º£ÃæÉÏÓб¡Îí£®ÎÒ¹úµÄÒ»ËÒÓæ´¬ÕýÔÚÔÈËÙÐÐÊ»£¬µ½´ïA´¦Ê±£¬´¬ÀÏ´óͻȻ·¢ÏÖºó²àÃæ²»Ô¶´¦ÓзÆѲÂß½¢ÕýÔÚÏòËûÃÇ¿¿½ü£¬²¢Ô¤¼Æ»¹ÓÐ40min¾Í»á×·ÉÏÓæ´¬£¬ÓÚÊÇÁ¢¼´ÏòÔÚC´¦º£ÓòÖ´ÐÐÈÎÎñµÄÎÒ¹úijº£¼àÓæÕþ´¬·¢³öÇóÔ®Ðźţ¬ÎÒº£¼àÖ´·¨ÈËÔ±Á¢¼´ÍÆËã³ö40minºóµÄÓ洬λÖÃÓ¦ÔÚD´¦£¬ÂíÉϵ÷ºÃº½Ïò£¬ÑØCDÖ±Ïß·½Ïò´Ó¾²Ö¹³ö·¢Ç¡ºÃÔÚ40minÄÚµ½´ïD´¦£¬ÈçͼËùʾ£¬º£¼à´¬Ô˶¯µÄËٶȡ¢Ê±¼äͼÏóÈçͼËùʾ£¬

Çó£º

(1)º£¼à´¬×ߵĺ½ÏßCDµÄ³¤¶È£®

(2)¼ÙÉè¸Ãº£¼à´¬ÒÔ×î´óËٶȺ½ÐÐʱÂÖ»úÊä³öµÄ×ܹ¦ÂÊΪ2.5¡Á103kW£¬Ôò½¢´¬Êܺ£Ë®µÄ×èÁ¦Óжà´ó£¿

(3)¼ÙÉè½¢ÌåÊܺ£Ë®µÄ×èÁ¦²»±ä½¢ÌåÖÊÁ¿Îª7000¶Ö£¬ÔòÔÚµÚ36·ÖÖÓʱ£¬ÂÖ»úͨ¹ýÎÐÂÖ¶Ôº£Ë®µÄÍÆÁ¦Îª¶à´ó£¿·½ÏòÈçºÎ£¿

 

 

¡¾´ð°¸¡¿

(1) 36km(2) 1.25¡Á105N(3) £­3.42¡Á105N

¡¾½âÎö¡¿(1)ÓÉͼÏóÖªÇýÖð½¢ÏÈÔȼÓËÙÔÙÔÈËÙ×îºóÔȼõËÙÖ±ÏßÔ˶¯£¬¼ÓËÙ¶Îa1£½m/s2£½m/s2   (1·Ö)

S1£½at£½¡Á¡Á(15¡Á60)2m£½9¡Á103m         (1·Ö)

ÔÈËٽ׶ÎS2£½vt2£½20¡Á(35£­15)¡Á60m£½2.4¡Á104m     (1·Ö)

¼õËٽ׶ÎS3£½¡¤t3£½¡Á(40£­35)¡Á60m£½3¡Á103m      (1·Ö)

Ôòº½ÏßCD³¤¶ÈΪS£½S1£«S2£«S3£½36km       (1·Ö)

(2)×î´óËÙ¶ÈÔÈËÙÐÐʻʱ£¬ÂÖ»ú¶¯Á¦Ó뺣ˮ¶Ô½¢Éí×èÁ¦Æ½ºâ£¬¼´F£­f×製0    (2·Ö)

ÓÖP£½Fv£¬ËùÒÔf×製£½N£½1.25¡Á105N        (3·Ö)

(3)Éè´ËʱÂÖ»úµÄ¶¯Á¦ÎªF£¬µÚ36·ÖÖÓÔȼõËٵļÓËÙ¶È

a£½£½m/s2£½£­m/s2              (2·Ö)

ÓÉF£­f£½ma£¬µÃF£½£­3.42¡Á105N          (2·Ö)

¸ººÅ±íʾÎÐÂÖ»ú¶¯Á¦·½ÏòÏòºóÓëÔ˶¯·½ÏòÏà·´£¬°ïÖú½¢´¬¼õËÙ£®(1·Ö)

ÓÉÅ£¶ÙµÚÈý¶¨ÂÉ£¬ÎÐÂÖ¶Ôº£Ë®µÄÍÆÁ¦Ó¦ÏòÇ°£¬ÓëÇ°½ø·½ÏòÏàͬ£¬´óСΪF¡ä£½3.42¡Á105N. (1·Ö)

±¾Ì⿼²éÔȱäËÙÖ±ÏßÔ˶¯µÄͼÏñÓ¦Óã¬ÓÉͼÏñµÄбÂʱíʾ¼ÓËٶȴóС¿ÉÇó³ö¼ÓËٶȣ¬ÓÉÔ˶¯Ñ§¹«Ê½¿ÉÇóµÃλÒÆ£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂɺÍP=Fv¿ÉÇóµÃ×èÁ¦

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø