ÌâÄ¿ÄÚÈÝ

Èçͼ¼×Ëùʾ£¬Æ½ÐÐÓڹ⻬бÃæµÄÇᵯ»É¾¢¶ÈϵÊýΪk£¬Ò»¶Ë¹Ì¶¨ÔÚÇã½ÇΪ¦ÈµÄбÃæµ×¶Ë£¬ÁíÒ»¶ËÓëÎï¿éAÁ¬½Ó£»Á½Îï¿éA¡¢BÖÊÁ¿¾ùΪm£¬³õʼʱ¾ù¾²Ö¹¡£ÏÖÓÃƽÐÐÓÚбÃæÏòÉϵÄÁ¦FÀ­¶¯Îï¿éB£¬Ê¹B×ö¼ÓËÙ¶ÈΪaµÄÔȼÓËÙÔ˶¯£¬A¡¢BÁ½Îï¿éÔÚ¿ªÊ¼Ò»¶Îʱ¼äÄÚµÄv-t¹Øϵ·Ö±ð¶ÔӦͼÒÒÖÐA¡¢BͼÏߣ¨t1ʱ¿ÌA¡¢BµÄͼÏßÏàÇУ¬t2ʱ¿Ì¶ÔÓ¦AͼÏßµÄ×î¸ßµã£©£¬ÖØÁ¦¼ÓËÙ¶ÈΪg£¬Ôò

A£®t2ʱ¿Ì£¬µ¯»ÉÐαäÁ¿Îª0
B£®t1ʱ¿Ì£¬µ¯»ÉÐαäÁ¿Îª(mgsin¦È+ma£©/k
C£®´Ó¿ªÊ¼µ½t2ʱ¿Ì£¬À­Á¦FÖð½¥Ôö´ó
D£®´Ó¿ªÊ¼µ½t1ʱ¿Ì£¬À­Á¦F×öµÄ¹¦±Èµ¯»Éµ¯Á¦×öµÄ¹¦ÉÙ

BD

½âÎöÊÔÌâ·ÖÎö£ºÓÉͼÖÐt1ʱ¿ÌA¡¢BµÄͼÏßÏàÇУ¬Ö®ºóAÎïÌåµÄ¼ÓËٶȼõС£¬¶øBÎïÌåµÄ¼ÓËٶȲ»±ä£¬ËµÃ÷´Ëʱ¿ÌA¡¢B·ÖÀ룬A¡¢B¼äµÄµ¯Á¦ÎªÁ㣬´Ëʱ¶ÔAÎïÌåÁÐÅ£¶ÙµÚ¶þ¶¨ÂÉ·½³Ì£º£¬½âµÃ£¬BÑ¡ÏîÕýÈ·£»µ±AÎïÌåÔÚt2ʱ¿Ì¶ÔÓ¦AͼÏßµÄ×î¸ßµã£¬¼ÈAÎïÌåµÄ¼ÓËÙ¶È˲ʱΪÁ㣬ÓÉƽºâ£¬½âµÃ£¬ËùÒÔt2ʱ¿Ì£¬µ¯»ÉÐαäÁ¿²»Îª0£¬AÑ¡Ïî´íÎó£»0- t1ʱ¼äÄÚµ¯»É·¢ÉúÐα䣬¶ÔABÕûÌåÁÐÅ£¶ÙµÚ¶þ¶¨ÂÉ·½³Ì£º£¬Öªx¼õС£¬FÔö´ó£¬t1ʱ¿ÌA¡¢B·ÖÀ룬t1-t2ʱ¼äÄÚ¶ÔBÎïÌåÁÐÅ£¶ÙµÚ¶þ¶¨ÂÉ·½³Ì£º,F²»±ä£¬¹ÊCÑ¡Ïî´íÎó£»´Ó¿ªÊ¼µ½t1ʱ¿Ì£¬¶ÔABÕûÌåÁÐÅ£¶ÙµÚ¶þ¶¨ÂÉ·½³Ì£º¿´·ÖÎö³öÍâÁ¦FËæx¾ùÔȼõС¶øÔö´ó£¬µ«µ¯Á¦ÓÉÓÚÒªÔÚ³õ̬ʱƽºâÁ½¸öÎïÌåÖØÁ¦µÄ·ÖÁ¦£¬¼Èt=0ʱ£¬ABÕûÌåƽºâµ¯Á¦´óСΪ£¬¶ÔABÕûÌåÁÐÅ£¶ÙµÚ¶þ¶¨ÂÉ·½³Ì¿É±äΪ£¬¼ÈºãÁ¿£¬ËùÒÔ´Ó¿ªÊ¼µ½t1ʱ¿Ì£¬À­Á¦F×öµÄ¹¦±Èµ¯»Éµ¯Á¦×öµÄ¹¦ÉÙ£¬DÑ¡ÏîÕýÈ·¡£
¿¼µã£ºÅ£¶ÙµÚ¶þ¶¨ÂÉ ÕûÌå·¨ºÍ¸ôÀë·¨

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø