Ò»´«ËÍ´ø×°ÖÃʾÒâÈçͼ£¬ÆäÖд«ËÍ´ø¾­¹ýABÇøÓòʱÊÇˮƽµÄ£¬¾­¹ýBCÇøÓòʱ±äΪԲ»¡ÐΣ¨Ô²»¡Óɹ⻬ģ°åÐγɣ¬Î´»­³ö£©£¬¾­¹ýCDÇøÓòʱÊÇÇãбµÄ£¬ABÓëCD¶¼ÓëBCÏàÇУ®ÏÖÔÚ´óÁ¿µÄÖÊÁ¿¾ùΪmµÄС»õÏäÒ»¸öÒ»¸öÔÚA´¦·Åµ½´«ËÍ´øÉÏ£¬·ÅÖÃʱ³õËÙΪÁ㣬¾­´«ËÍ´øÔ˶¯µ½D´¦£¬DºÍAµÄ¸ß¶È²îΪh£®Îȶ¨¹¤×÷ʱ´«ËÍ´øËٶȲ»±ä£¬CD¶ÎÉϸ÷ÏäµÈ¾àÅÅÁУ¬ÏàÁÚÁ½ÏäµÄ¾àÀëΪL£®Ã¿¸öÏä×ÓÔÚA´¦Í¶·Åºó£¬ÔÚµ½´ïB֮ǰÒѾ­Ïà¶ÔÓÚ´«ËÍ´ø¾²Ö¹£¬ÇÒÒÔºó²»ÔÙ»¬¶¯£¨ºöÂÔ¾­BC¶ÎʱµÄ΢С»¬¶¯£©£®ÒÑÖªÔÚÒ»¶ÎÏ൱³¤µÄʱ¼äTÄÚ£¬¹²ÔËËÍС»õÏäµÄÊýĿΪN£®´Ë×°ÖÃÓɵ綯»ú´ø¶¯£¬´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á£®Çóµç¶¯»úµÄƽ¾ùÊä³ö¹¦ÂÊP£®

 

´ð°¸£ºNm[(N2L2/T2)+gh]/T
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»´«ËÍ´ø×°ÖÃʾÒâÈçͼ£¬ÆäÖд«ËÍ´ø¾­¹ýABÇøÓòʱÊÇˮƽµÄ£¬¾­¹ýBCÇøÓòʱ±äΪԲ»¡ÐΣ¨Ô²»¡Óɹ⻬ģ°åÐγɣ¬Î´»­³ö£©£¬¾­¹ýCDÇøÓòʱÊÇÇãбµÄ£¬ABºÍCD¶¼ÓëBCÏàÇУ®ÏÖÓдóÁ¿µÄÖÊÁ¿¾ùΪm=2kgµÄС¹¤¼þÒ»¸öÒ»¸öÔÚA´¦ÒÔ³õËÙΪv0=1m/s£¬·½ÏòˮƽÏòÓÒ»¬ÉÏ´«ËÍ´ø£¬¾­´«ËÍ´øÔËË͵½D´¦£¬DºÍAµÄ¸ß¶È²îΪh=2m£®´«ËÍ´øÒԺ㶨µÄËÙÂÊv=2m/sÔ˶¯£¬Ð¡¹¤¼þÓë´«ËÍ´øÖ®¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.5£¬µ±Ç°Ò»¸öС¹¤¼þÔÚ´«ËÍ´øÉÏÍ£Ö¹Ïà¶Ô»¬¶¯Ê±£¬ºóÒ»¸ö¹¤¼þÁ¢¼´»¬ÉÏ´«ËÍ´ø£¬Ã¿¸öС¹¤¼þÔÚA´¦Í¶·Åºó£¬ÔÚµ½´ïB֮ǰÒѾ­Ïà¶ÔÓÚ´«ËÍ´ø¾²Ö¹£¬ÇÒÒÔºóÒ²²»ÔÙ»¬¶¯£¨ºöÂÔ¾­BC¶ÎʱµÄ΢С»¬¶¯£©£®Õâ×°ÖÃÓɵ綯»ú´ø¶¯£¬´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á£®Çó
£¨1£©CD¶ÎÏàÁÚÁ½ÏäµÄ¾àÀëL¶à´ó£¿
£¨2£©ÔÚ1·ÖÖÓÄÚ£¬¹²ÔËËÍС¹¤¼þµÄÊýÄ¿NΪ¶àÉÙ£¿
£¨3£©ÔÚ1·ÖÖÓÄÚ£¬µç¶¯»úµÄƽ¾ù³é³ö¹¦ÂÊ
.
P
£®£¨gÈ¡10m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÒ»´«ËÍ´ø×°ÖÃʾÒâÈçͼËùʾ£¬ÆäÖд«ËÍ´øABÇøÓòÊÇˮƽµÄ£¬BCÇøÓòµÄÇã½Ç¦È=37¡ã£¬B´¦ÓÐÒ»ºÜС¶ÎÔ²»¡Ðιý¶É£¨Ô²»¡Ðγ¤¶È²»¼Æ£¬Í¼ÖÐδ»­³ö£©£¬AB³¤¶ÈΪL1=4m£¬BC³¤¶ÈΪL2=16.6m£®ÏÖ½«Ò»¸öÖÊÁ¿m=l£®0kgµÄ¹¤¼þ£¨¿ÉÊÓΪÖʵ㣩ÎÞ³õËÙÇá·ÅÔÚ´«ËÍ´øA¶Ë£¬¹¤¼þÓë´«ËÍ´ø¼ä¶¯Ä¦²ÁÒòËØΪ¦Ì=0.8£®Éè´«ËÍ´øÔËÐеÄËÙÂÊv=8.4m/sʼÖÕ±£³Ö²»±ä£¬È¡g=10m/s2£¬sin37¡ã=0.6£¬cos37¡ã=0.8£®
Çó£º
£¨1£©¹¤¼þµ½´ïC¶ËʱµÄËٶȴóС£»
£¨2£©¹¤¼þ´ÓA¶ËÔ˶¯µ½C¶ËËù¾­ÀúµÄʱ¼ä£»
£¨3£©¹¤¼þ´ÓA¶Ë´«Ë͵½C¶ËµÄ¹ý³ÌÖУ¬¹¤¼þÓë´«ËÍ´ø¼ä¿Ë·þĦ²Á×ܹ²ÉúÈȶàÉÙ£¿£¨´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»´«ËÍ´ø×°ÖÃʾÒâÈçͼËùʾ£¬ÆäÖд«ËÍ´ø¾­¹ý£Á£ÂÇøÓòʱÊÇˮƽµÄ£¬¾­¹ý£Â£ÃÇøÓòʱ±äΪԲ»¡ÐΣ¨Ô²»¡Óɹ⻬ģ°åÐγɣ¬Î´»­³ö£©£¬¾­¹ý£Ã£ÄÇøÓòʱÊÇÇãбµÄ£¬£Á£ÂºÍ£Ã£Ä¶¼Óë£Â£ÃÏàÇÐ. ÏÖ½«´óÁ¿µÄÖÊÁ¿¾ùΪ£íµÄС»õÏäÒ»¸öÒ»¸öÔÚ£Á´¦·Åµ½´«ËÍ´øÉÏ£¬·ÅÖÃʱ³õËÙ¶ÈΪÁ㣬¾­´«ËÍ´øÔËË͵½£Ä´¦£¬£ÄºÍ£ÁµÄ¸ß¶È²îΪ£è. Îȶ¨¹¤×÷ʱ´«ËÍ´øËٶȲ»±ä£¬£Ã£Ä¶ÎÉϸ÷ÏäµÈ¾àÅÅÁУ¬ÏàÁÚÁ½ÏäµÄ¾àÀëΪ£Ì . ÿ¸öÏä×ÓÔÚ£Á´¦Í¶·Åºó£¬ÔÚµ½´ï£Â֮ǰÒѾ­Ïà¶ÔÓÚ´«ËÍ´ø¾²Ö¹£¬ÇÒÒÔºóÒ²²»ÔÙ»¬¶¯£¨ºöÂÔ¾­£Â£Ã¶ÎʱµÄ΢С»¬¶¯£©. ÒÑÖªÔÚÒ»¶ÎÏ൱³¤µÄʱ¼ä£ÔÄÚ£¬¹²ÔËËÍС»õÏäµÄÊýĿΪ£Î . ÕâÖÖ×°ÖÃÓɵ綯»ú´ø¶¯£¬´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á£¬Çóµç¶¯»úµÄƽ¾ùÊä³ö¹¦ÂÊ£Ð

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»´«ËÍ´ø×°ÖÃʾÒâÈçͼ£¬´«ËÍ´øÔÚABÇøÓòÊÇÇãбµÄ£¬AB³¤¶ÈL=5.0m£¬BºÍAµÄ¸ß¶È²îΪh=1.0m£®Îȶ¨¹¤×÷ʱ´«ËÍ´øÔËÐеÄËٶȱ£³Öv=1.0m/s²»±ä£®ÏÖ½«´óÁ¿µÄÖÊÁ¿¾ùΪm= 4.0kgµÄС»õÏäÒ»¸öÒ»¸öÔÚA´¦·Åµ½´«ËÍ´øÉÏ£¬·ÅÖÃС»õÏäµÄʱ¼ä¼ä¸ô¾ùΪT=1.0s£¬·ÅÖÃʱ³õËÙΪÁ㣬¾­´«ËÍ´øÔËË͵½B´¦£®Ð¡»õÏäÔÚ´«ËÍ´øÉÏÏÈ×ö¼ÓËÙÔ˶¯£¬È»ºó±£³ÖÔÈËÙÔ˶¯£¬¼ÓËÙ¹ý³ÌºÍÔÈËÙ¹ý³ÌËùÓõÄʱ¼äÖ®±ÈΪ£®´«ËÍ´ø×°ÖÃÓɵ綯»ú´ø¶¯£¬´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á£®Çó£º

   £¨1£©Ð¡»õÏäÔÚ´«ËÍ´øÉÏÔ˶¯¹ý³Ì£¬»õÏä¼äµÄ¾àÀë×î´óΪ¶àÉÙ£¿

   £¨2£©Ð¡»õÏäÓë´«ËÍ´ø¼äµÄ»¬¶¯Ä¦²ÁÁ¦¶à´ó£¿

   £¨3£©µç¶¯»úµÄƽ¾ùÊä³ö¹¦Âʶà´ó£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011ÄêºâÑôÊиßÈýµÚÈý´ÎÔ¿¼ÎïÀí¾í ÌâÐÍ£º¼ÆËãÌâ

Ò»´«ËÍ´ø×°ÖÃʾÒâÈçͼ£¬ÆäÖд«ËÍ´ø¾­¹ýABÇøÓòʱÊÇˮƽµÄ£¬¾­¹ýBCÇøÓòʱ±äΪԲ»¡ÐΣ¨Ô²»¡Óɹ⻬ģ°åÐγɣ¬Î´»­³ö£©£¬¾­¹ýCDÇøÓòʱÊÇÇãбµÄ£¬ABºÍCD¶¼ÓëBCÏàÇС£ÏÖÓдóÁ¿µÄÖÊÁ¿¾ùΪm=2kgµÄС¹¤¼þÒ»¸öÒ»¸öÔÚA´¦ÒÔ³õËÙΪ£¬·½ÏòˮƽÏòÓÒ»¬ÉÏ´«ËÍ´ø£¬¾­´«ËÍ´øÔËË͵½D´¦£¬DºÍAµÄ¸ß¶È²îΪh=2m¡£´«ËÍ´øÒԺ㶨µÄËÙÂÊÔ˶¯£¬Ð¡¹¤¼þÓë´«ËÍ´øÖ®¼äµÄ¶¯Ä¦²ÁÒòÊý £¬µ±Ç°Ò»¸öС¹¤¼þÔÚ´«ËÍ´øÉÏÍ£Ö¹Ïà¶Ô»¬¶¯Ê±£¬ºóÒ»¸ö¹¤¼þÁ¢¼´»¬ÉÏ´«ËÍ´ø£¬Ã¿¸öС¹¤¼þÔÚA´¦Í¶·Åºó£¬ÔÚµ½´ïB֮ǰÒѾ­Ïà¶ÔÓÚ´«ËÍ´ø¾²Ö¹£¬ÇÒÒÔºóÒ²²»ÔÙ»¬¶¯£¨ºöÂÔ¾­BC¶ÎʱµÄ΢С»¬¶¯£©¡£Õâ×°ÖÃÓɵ綯»ú´ø¶¯£¬´«ËÍ´øÓëÂÖ×Ó¼äÎÞÏà¶Ô»¬¶¯£¬²»¼ÆÂÖÖá´¦µÄĦ²Á¡£Çó

1. CD¶ÎÏàÁÚÁ½ÏäµÄ¾àÀëL¶à´ó?

2.ÔÚ1·ÖÖÓÄÚ£¬¹²ÔËËÍС¹¤¼þµÄÊýÄ¿NΪ¶àÉÙ£¿

3.ÔÚ1·ÖÖÓÄÚ£¬µç¶¯»úµÄƽ¾ù³é³ö¹¦ÂÊ¡£

£¨gÈ¡10m/s2£©

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸