£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·µÄʵÑéÖУ¬ÆäÖеĶþ¸ö²½ÖèÊÇ£º
¢ÙÔÚˮƽ·ÅÖõÄľ°åÉϵæÒ»ÕÅ°×Ö½²¢¹Ì¶¨ºÃ£¬°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚľ°åÉÏ£¬ÁíÒ»¶ËË©Á½¸ùϸÏߣ¬Í¨¹ýϸÏßͬʱÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ËüÓëϸÏߵĽáµã´ïµ½Ä³Ò»Î»ÖÃOµã£¬ÔÚ°×Ö½ÉϼÇÏÂOµãºÍÁ½¸öµ¯»É³ÓµÄ¶ÁÊýF1ºÍF2£®
¢ÚÖ»ÓÃÒ»¸öµ¯»É³Óͨ¹ýϸÉþÀ­ÏðƤÌõ£¬Ê¹ËüµÄÉ쳤Á¿ÓëÓÃÁ½¸öµ¯»É³ÓÀ­Ê±É쳤Á¿Ò»Ñù£¬¼ÇÏ´Ëʱµ¯»É³ÓµÄ¶ÁÊýFºÍϸÏߵķ½Ïò£®
ÒÔÉÏÁ½²½Öè¾ùÓÐÊè©£¬ÇëÖ¸³öÊè©£º
ÔÚ¢ÙÖÐÊÇ   
ÔÚ¢ÚÖÐÊÇ   
£¨2£©Ä³Í¬Ñ§ÔÚÑо¿¡°Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡±µÄʵÑéÖУ¬µÃ³öºÏÁ¦FµÄ´óСËæ¼Ð½Ç¦È±ä»¯µÄ¹æÂÉÈçͼËùʾ£¬ÓÉͼÏó¼°Á¦µÄºÏ³É֪ʶ¿ÉÇóµÃÁ½·ÖÁ¦´óС·Ö±ðΪ    N¡¢    N£»ÈôÊÇÈÃËüÃǵĺÏÁ¦×÷ÓÃÔÚÒ»ÖÊÁ¿Îª2kgµÄÎïÌåÉÏ£¨²»¼ÆÆäËûÁ¦£©¿Éʹ¸ÃÎïÌå»ñµÃµÄ¼ÓËٶȷ¶Î§Îª£º    £®
¡¾´ð°¸¡¿·ÖÎö£º£¨1£©Ã÷ȷʵÑéÔ­ÀíºÍʵÑé²½Öè¼´¿ÉÕýÈ·½â´ð±¾Ì⣮
£¨2£©¸ù¾ÝͼÏó¿ÉÖªÁ½Á¦¼Ð½ÇΪºÍ¦ÐʱµÄ´óС£¬ÓÉÊýѧ֪ʶ¿ÉÇó³öÁ½Á¦µÄ´óС£¬¸ù¾Ý¶þÁ¦ºÏ³ÉʱºÏÁ¦µÄ·¶Î§¼´¿ÉÕýÈ·Çó³öÎïÌå¼ÓËٶȵķ¶Î§£®
½â´ð£º½â£º£¨1£©¸ÃʵÑé²ÉÓá°µÈЧ·¨¡±½øÐУ¬¼´Ò»¸öµ¯»É³ÓºÍÁ½¸öµ¯»É³ÓÀ­ÏðƤÌõÓëϸÉþÌ׵ĽáµãʱӦ¸ÃÀ­ÖÁͬһλÖÃOµã£¬ÓÉÓÚÁ¦ÊÇʸÁ¿£¬Òò´ËÔڼǼÊý¾Ýʱ£¬²»¹âÒª¼Ç¼Á¦µÄ´óС£¬»¹Òª¼Ç¼Æä·½Ïò£¬ÕâÑù²ÅÄÜ×öƽÐÐËıßÐΣ¬´Ó¶øÑéÖ¤Á½¸öÁ¦µÄºÏÁ¦´óСºÍ·½ÏòÊÇ·ñÓëÒ»¸öÁ¦µÄ´óСºÍ·½ÏòÏàͬ£®
¹Ê´ð°¸Îª£º»¹Ó¦¼ÇÏÂÁ½Ï¸Ïߵķ½Ïò£¬»¹Ó¦½«½áµã´ïµ½Í¬Ò»Î»ÖÃOµã£®
£¨2£©ÉèÁ½Á¦·Ö±ðΪF1ºÍF2£¬ÔòÓУº
¼Ð½ÇΪΪʱ£º
¼Ð½ÇΪ¦Ðʱ£ºFºÏ=F1-F2
´úÈëÊý¾ÝµÃ£ºF1=8N£¬F2=6N£¬ÆäºÏÁ¦·¶Î§Îª£º2N¡ÜFºÏ¡Ü14N£¬ÓÉÅ£¶ÙµÚ¶þ¶¨ÂÉ¿ÉÖªÆä¼ÓËٶȷ¶Î§Îª£º1m/s2¡Üa¡Ü7m/s2
¹Ê´ð°¸Îª£º6£¬8£¬1m/s2¡Üa¡Ü7m/s2£®
µãÆÀ£º±¾Ì⿼²éÁËÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨ÔòʵÑéºÍÁ¦µÄºÏ³ÉµÄ»ù´¡ÖªÊ¶£¬¶ÔÓÚÕâЩ»ù´¡ÖªÊ¶×¢ÒâÔÚƽʱÁ·Ï°Öв»¶Ï¼ÓÇ¿²»ÄܺöÊÓ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·ÊµÑéÖеÄÈý¸ö²½ÖèÈçÏ£º
¢ÙÔÚˮƽ·ÅÖõÄľ°åÉϹ̶¨Ò»ÕÅ°×Ö½£¬°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚľ°åÉÏ£¬ÁíÒ»¶ËË©Á½¸ùϸÉþÌ×£®Í¨¹ýϸÉþÌ×ͬʱÓÃÁ½¸ö²âÁ¦¼Æ»¥³É½Ç¶ÈµØÀ­ÏðƤ½î£¬Ê¹ËüÓëϸÉþÌ׵Ľáµãµ½´ïijһλÖÃOµã£¬ÔÚ°×Ö½ÉϼÇÏÂOµãºÍÁ½Ï¸ÉþÌ׵ķ½Ïò£¬¶Á³öÁ½¸ö²âÁ¦¼ÆµÄʾÊýF1ºÍF2£®
¢ÚÔÚ°×Ö½Éϸù¾ÝF1ºÍF2µÄ´óСºÍ·½Ïò£¬Ó¦ÓÃƽÐÐËıßÐζ¨Ôò×÷ͼÇó³öºÏÁ¦F£®
¢ÛÖ»ÓÃÒ»Ö»²âÁ¦¼Æͨ¹ýϸÉþÌ×À­ÏðƤ½î£¬Ê¹ËüµÄÉ쳤Á¿ÓëÓÃÁ½¸ö²âÁ¦¼ÆÀ­Ê±Ïàͬ£¬¼ÇÏ´Ëʱ²âÁ¦¼ÆµÄʾÊýF'ºÍϸÉþÌ׵ķ½Ïò£®
ÒÔÉϲ½ÖèÖÐÄÄÒ»¸öÓдíÎó»òÊè©£¬Çë²¹³ä»ò¸üÕý´íÎó£º
¼Ç¼Á½¸úϸÏߵķ½Ïò
¼Ç¼Á½¸úϸÏߵķ½Ïò
£»
£¨2£©ÒÔ϶ԼõСʵÑéÎó²îÓÐÒæµÄ×ö·¨ÊÇ
°Ñ½áµãÀ­µ½ÏàͬµÄλÖÃO
°Ñ½áµãÀ­µ½ÏàͬµÄλÖÃO
£®
A£®Á½Ï¸Éþ±ØÐëµÈ³¤
B£®ÓòâÁ¦¼ÆÀ­Ï¸ÉþÌ×ʱ£¬À­Á¦Ó¦Êʵ±´óЩ£¬µ«²»Äܳ¬¹ýÁ¿³Ì
C£®ÓÃÁ½µ¯»É³ÓͬʱÀ­Ï¸ÉþʱÁ½µ¯»É³ÓʾÊýÖ®²îÓ¦¾¡¿ÉÄÜ´ó
D£®À­ÏðƤÌõµÄϸÉþÒª³¤Ð©£¬±ê¼ÇͬһϸÉþ·½ÏòµÄÁ½µãҪԶЩ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·µÄʵÑéÖУ¬ÆäÖеĶþ¸ö²½ÖèÊÇ£º
¢ÙÔÚˮƽ·ÅÖõÄľ°åÉϵæÒ»ÕÅ°×Ö½²¢¹Ì¶¨ºÃ£¬°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚľ°åÉÏ£¬ÁíÒ»¶ËË©Á½¸ùϸÏߣ¬Í¨¹ýϸÏßͬʱÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ËüÓëϸÏߵĽáµã´ïµ½Ä³Ò»Î»ÖÃOµã£¬ÔÚ°×Ö½ÉϼÇÏÂOµãºÍÁ½¸öµ¯»É³ÓµÄ¶ÁÊýF1ºÍF2£®
¢ÚÖ»ÓÃÒ»¸öµ¯»É³Óͨ¹ýϸÉþÀ­ÏðƤÌõ£¬Ê¹ËüµÄÉ쳤Á¿ÓëÓÃÁ½¸öµ¯»É³ÓÀ­Ê±É쳤Á¿Ò»Ñù£¬¼ÇÏ´Ëʱµ¯»É³ÓµÄ¶ÁÊýFºÍϸÏߵķ½Ïò£®
ÒÔÉÏÁ½²½Öè¾ùÓÐÊè©£¬ÇëÖ¸³öÊè©£º
ÔÚ¢ÙÖÐÊÇ
»¹Ó¦¼ÇÏÂÁ½Ï¸Ïߵķ½Ïò
»¹Ó¦¼ÇÏÂÁ½Ï¸Ïߵķ½Ïò

ÔÚ¢ÚÖÐÊÇ
»¹Ó¦½«½áµã´ïµ½Í¬Ò»Î»ÖÃOµã
»¹Ó¦½«½áµã´ïµ½Í¬Ò»Î»ÖÃOµã

£¨2£©Ä³Í¬Ñ§ÔÚÑо¿¡°Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡±µÄʵÑéÖУ¬µÃ³öºÏÁ¦FµÄ´óСËæ¼Ð½Ç¦È±ä»¯µÄ¹æÂÉÈçͼËùʾ£¬ÓÉͼÏó¼°Á¦µÄºÏ³É֪ʶ¿ÉÇóµÃÁ½·ÖÁ¦´óС·Ö±ðΪ
6
6
N¡¢
8
8
N£»ÈôÊÇÈÃËüÃǵĺÏÁ¦×÷ÓÃÔÚÒ»ÖÊÁ¿Îª2kgµÄÎïÌåÉÏ£¨²»¼ÆÆäËûÁ¦£©¿Éʹ¸ÃÎïÌå»ñµÃµÄ¼ÓËٶȷ¶Î§Îª£º
1m/s2¡Üa¡Ü7m/s2
1m/s2¡Üa¡Ü7m/s2
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·ÊµÑéÖУ¬×öºÃʵÑé×¼±¸ºó£¬ÏÈÓÃÁ½¸öµ¯»É³Ó°ÑÏðƤÌõµÄ½áµãÀ­µ½Ä³Ò»Î»ÖÃO£¬´ËʱѧÉúÐèÒª¼Ç¼µÄÊÇ
Á½¸öµ¯»É³ÓµÄ¶ÁÊý
Á½¸öµ¯»É³ÓµÄ¶ÁÊý
£¬
Á½¸öϸÉþÌ׵ķ½Ïò
Á½¸öϸÉþÌ׵ķ½Ïò
£¬
ÏðƤÌõ½áµãµÄλÖÃ
ÏðƤÌõ½áµãµÄλÖÃ
£¬½Ó×ÅÓÃÒ»¸öµ¯»É³ÓÀ­ÏðƤÌõ£¬ÒªÌرð×¢ÒâµÄÊÇ
°ÑÏðƤÌõµÄ½áµãÀ­µ½Í¬Ò»Î»ÖÃO
°ÑÏðƤÌõµÄ½áµãÀ­µ½Í¬Ò»Î»ÖÃO
£®
£¨2£©Ä³Í¬Ñ§×ö¡°Ì½Ë÷µ¯Á¦ºÍµ¯»ÉÉ쳤µÄ¹Øϵ¡±ÊµÑ飮ËûÏȰѵ¯»Éƽ·ÅÔÚ×ÀÃæÉÏʹÆä×ÔÈ»É쳤£¬ÓÃÖ±³ß²â³öµ¯»ÉµÄÔ­³¤L0£¬Ôٰѵ¯»ÉÊúÖ±Ðü¹ÒÆðÀ´£¬¹ÒÉÏíÀÂëºó²â³öµ¯»ÉÉ쳤ºóµÄ³¤¶ÈL£¬°ÑL-L0×÷Ϊµ¯»ÉµÄÉ쳤X£¬ÕâÑù²Ù×÷£¬ÓÉÓÚµ¯»É×ÔÉíÖØÁ¦µÄÓ°Ï죬×îºó»­³öµÄͼÏß¿ÉÄÜÊÇÏÂÁÐËùʾͼÏßµÄÄÄÒ»¸ö£¿
C
C

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·µÄʵÑéÖУ¬ÆäÖеĶþ¸ö²½ÖèÊÇ£º

¢ÙÔÚˮƽ·ÅÖõÄľ°åÉϵæÒ»ÕÅ°×Ö½²¢¹Ì¶¨ºÃ£¬°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚľ°åÉÏ£¬ÁíÒ»¶ËË©Á½¸ùϸÏߣ¬Í¨¹ýϸÏßͬʱÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ËüÓëϸÏߵĽáµã´ïµ½Ä³Ò»Î»ÖÃOµã£¬ÔÚ°×Ö½ÉϼÇÏÂOµãºÍÁ½¸öµ¯»É³ÓµÄ¶ÁÊýF1ºÍF2¡£

¢ÚÖ»ÓÃÒ»¸öµ¯»É³Óͨ¹ýϸÉþÀ­ÏðƤÌõ£¬Ê¹ËüµÄÉ쳤Á¿ÓëÓÃÁ½¸öµ¯»É³ÓÀ­Ê±É쳤Á¿Ò»Ñù£¬¼ÇÏ´Ëʱµ¯»É³ÓµÄ¶ÁÊýFºÍϸÏߵķ½Ïò¡£

ÒÔÉÏÁ½²½Öè¾ùÓÐÊè©£¬ÇëÖ¸³öÊè©£º

ÔÚ¢ÙÖÐÊÇ                                    

ÔÚ¢ÚÖÐÊÇ                                     

£¨2£©Ä³Í¬Ñ§ÔÚÑо¿¡°Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡±µÄʵÑéÖУ¬µÃ³öºÏÁ¦FµÄ´óСËæ¼Ð½Ç¦È±ä»¯µÄ¹æÂÉÈçͼËùʾ£¬ÓÉͼÏó¼°Á¦µÄºÏ³É֪ʶ¿ÉÇóµÃÁ½·ÖÁ¦´óС·Ö±ðΪ         N¡¢         N£»ÈôÊÇÈÃËüÃǵĺÏÁ¦×÷ÓÃÔÚÒ»ÖÊÁ¿Îª2kgµÄÎïÌåÉÏ£¨²»¼ÆÆäËûÁ¦£©¿Éʹ¸ÃÎïÌå»ñµÃµÄ¼ÓËٶȷ¶Î§Îª£º

                                                  ¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2013½ìÔÆÄÏÊ¡¸ßÒ»ÉÏѧÆÚÆÚÄ©¿¼ÊÔÎïÀíÊÔ¾í ÌâÐÍ£ºÊµÑéÌâ

£¨1£©ÔÚ¡¶Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡·µÄʵÑéÖУ¬ÆäÖеĶþ¸ö²½ÖèÊÇ£º

¢ÙÔÚˮƽ·ÅÖõÄľ°åÉϵæÒ»ÕÅ°×Ö½²¢¹Ì¶¨ºÃ£¬°ÑÏðƤÌõµÄÒ»¶Ë¹Ì¶¨ÔÚľ°åÉÏ£¬ÁíÒ»¶ËË©Á½¸ùϸÏߣ¬Í¨¹ýϸÏßͬʱÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈµØÀ­ÏðƤÌõ£¬Ê¹ËüÓëϸÏߵĽáµã´ïµ½Ä³Ò»Î»ÖÃOµã£¬ÔÚ°×Ö½ÉϼÇÏÂOµãºÍÁ½¸öµ¯»É³ÓµÄ¶ÁÊýF1ºÍF2¡£

¢ÚÖ»ÓÃÒ»¸öµ¯»É³Óͨ¹ýϸÉþÀ­ÏðƤÌõ£¬Ê¹ËüµÄÉ쳤Á¿ÓëÓÃÁ½¸öµ¯»É³ÓÀ­Ê±É쳤Á¿Ò»Ñù£¬¼ÇÏ´Ëʱµ¯»É³ÓµÄ¶ÁÊýFºÍϸÏߵķ½Ïò¡£

ÒÔÉÏÁ½²½Öè¾ùÓÐÊè©£¬ÇëÖ¸³öÊè©£º

ÔÚ¢ÙÖÐÊÇ                                    

ÔÚ¢ÚÖÐÊÇ                                     

£¨2£©Ä³Í¬Ñ§ÔÚÑо¿¡°Ì½¾¿ÇóºÏÁ¦µÄ·½·¨¡±µÄʵÑéÖУ¬µÃ³öºÏÁ¦FµÄ´óСËæ¼Ð½Ç¦È±ä»¯µÄ¹æÂÉÈçͼËùʾ£¬ÓÉͼÏó¼°Á¦µÄºÏ³É֪ʶ¿ÉÇóµÃÁ½·ÖÁ¦´óС·Ö±ðΪ         N¡¢         N£»ÈôÊÇÈÃËüÃǵĺÏÁ¦×÷ÓÃÔÚÒ»ÖÊÁ¿Îª2kgµÄÎïÌåÉÏ£¨²»¼ÆÆäËûÁ¦£©¿Éʹ¸ÃÎïÌå»ñµÃµÄ¼ÓËٶȷ¶Î§Îª£º

                                                  ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸