£¨2009?°²»ÕÄ£Ä⣩ÈçͼËùʾ£¬¼×¡¢ÒÒÁ½ÎïÌå·Ö±ð¹Ì¶¨ÔÚÒ»¸ùµ¯»ÉµÄÁ½¶Ë£¬²¢·ÅÔڹ⻬ˮƽµÄ×ÀÃæÉÏ£¬Á½ÎïÌåµÄÖÊÁ¿·Ö±ðΪm1ºÍm2£¬µ¯»ÉµÄÖÊÁ¿²»ÄܺöÂÔ£®¼×Êܵ½·½ÏòˮƽÏò×óµÄÀ­Á¦Fl×÷Óã¬ÒÒÊܵ½Ë®Æ½ÏòÓÒµÄÀ­Á¦F2×÷Óã®ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
·ÖÎö£º¶ÔÕûÌå·ÖÎö£¬Çó³öÕûÌåµÄ¼ÓËٶȣ¬ÔÙ¸ôÀë¶Ô¼×¡¢ÒÒ·ÖÎö£¬Çó³öµ¯»É¶Ô¼×µÄµ¯Á¦ºÍµ¯»É¶ÔÒҵĵ¯Á¦£¬´Ó¶ø±È½Ï³öµ¯Á¦µÄ´óС£®
½â´ð£º½â£ºÉ赯»ÉµÄÖÊÁ¿Îªm0£®
¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨Âɵã¬ÕûÌåµÄ¼ÓËÙ¶Èa=
F2-F1
m1+m2+m0
£®
¶Ô¼×ÓУºF¼×-F1=m1a£¬½âµÃF¼×=F1+m1a=
m1F2+m2F1+m0F1
m1+m2+m0
£®
¶ÔÒÒÓУºF2-FÒÒ=m2a£¬½âµÃFÒÒ=
m1F2+m2F1+m0F2
m1+m2+m0
£®
ÖªÈôF1£¼F2£¬ÔòF¼×£¼FÒÒ£®ÈôF1£¾F2£¬ÔòF¼×£¾FÒÒ£®¹ÊAÕýÈ·£¬B¡¢C¡¢D´íÎó£®
¹ÊÑ¡A£®
µãÆÀ£º½â¾ö±¾ÌâµÄ¹Ø¼üÄܹ»ÕýÈ·µØ½øÐÐÊÜÁ¦·ÖÎö£¬ÔËÓÃÅ£¶ÙµÚ¶þ¶¨ÂɽøÐÐÇó½â£¬ÒÔ¼°ÕÆÎÕÕûÌå·¨ºÍ¸ôÀë·¨µÄÔËÓã¬×¢Òⵯ»ÉµÄÖÊÁ¿²»ÄܺöÂÔ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?°²»ÕÄ£Ä⣩£¨1£©ÔÚÒ»´Î¿ÎÍâ»î¶¯ÖУ¬Ä³Í¬Ñ§ÓÃÈçͼ£¨a£©ËùʾµÄ×°ÖòâÁ¿·ÅÔÚˮƽ¹â»¬×ÀÃæÉÏÌú¿éAÓë½ðÊô°åBÖ®¼äµÄ¶¯Ä¦²ÁÒòÊý£¬ÒÑÖªÌú¿éAµÄÖÊÁ¿mA=1kg£¬½ðÊô°åBµÄÖÊÁ¿mB=0.5kg£¬ÓÃˮƽÁ¦FÏò×óÀ­½ðÊô°åB£¬Ê¹ÆäÏò×óÔ˶¯£¬µ¯»É³ÓʾÊýµÄ·Å´óÇé¿öÈçͼËùʾ£¬ÔòA¡¢B¼äµÄĦ²ÁÁ¦Ff=
2.50
2.50
N£¬A¡¢B¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=
0.25
0.25
£¨gÈ¡10m/s2£©£®
£¨2£©¸Ãͬѧ»¹Éè¼ÆÐԵؽ«Ö½´øÁ¬½ÓÔÚ½ðÊô°åBµÄºóÃ棬ͨ¹ý´òµã¼ÆʱÆ÷Á¬Ðø´òÏÂһЩ¼Æʱµã£¬È¡Ê±¼ä¼ä¸ôΪ0.1sµÄ¼¸µã£¬²âÁ¿ºó½á¹ûÈçͼ£¨b£©Ëùʾ£¬Ôò½ðÊô°å±»À­¶¯µÄ¼ÓËÙ¶Èa=
2.00
2.00
m/s2£¬ÓÉ´Ë¿É֪ˮƽÁ¦F=
3.50
3.50
N£®£¨ ½á¹û±£ÁôÈýλÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?°²»ÕÄ£Ä⣩ÈçͼËùʾ£¬ÊúÖ±·ÅÖÃÔÚˮƽÃæÉϵÄÇáÖʵ¯»ÉÉϵþ·Å×ÅÁ½Îï¿éA¡¢B£¬Á½ÕßµÄÖÊÁ¿¾ùΪ2kg£¬ËüÃÇ´¦ÓÚ¾²Ö¹×´Ì¬£®ÈôͻȻ½«Ò»¸ö´óСΪ10N¡¢·½ÏòÊúÖ±ÏòϵÄÁ¦Ê©¼ÓÔÚÎïÌåAÉÏ£¬Ôò´Ë˲¼äA¶ÔBµÄѹÁ¦´óСΪ£º£¨g=10m/s2£©£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?°²»ÕÄ£Ä⣩ÈçͼËùʾ£¬a¡¢bÊÇÁ½¸öλÓÚÁ½¸ö¹Ì¶¨Ð±ÃæÉϵÄÍêÈ«ÏàͬµÄÕý·½ÐÎÎï¿é£¬ËüÃÇÔÚˮƽ·½ÏòµÄÍâÁ¦FµÄ×÷ÓÃÏ´¦ÓÚ¾²Ö¹×´Ì¬£®ÒÑÖªa¡¢bÓëбÃæµÄ½Ó´¥Ã涼Êǹ⻬µÄ£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?°²»ÕÄ£Ä⣩ÔÚÓС°¿Æѧ°Â˹¿¨¡±Ö®³ÆµÄÃÀ¹ú¡¶¿Æѧ¡·ÔÓÖ¾2003Äê¶ÈÊÀ½ç¿Æ¼¼´óÍ»ÆÆÆÀÑ¡ÖУ¬wulixue Öеġ°Ö¤Ã÷ÓîÖæÊÇÓÉ°µÎïÖʺͰµÄÜÁ¿¡®Ö÷Ôס¯¡±µÄ¹ÛµãÃûÁаñÊ×£¬³ÉΪµ±½ñ¿Æ¼¼Í»ÆÆÖеÄÍ·ºÅÈȵ㣮ÊÀ½ç¿Æ¼¼µÄ·¢Õ¹ÏÔʾ£¬°µÎïÖÊ¡¢°µÄÜÁ¿Õý³ÉΪÌìÌåÎïÀíѧÑо¿µÄÖص㣮ÓîÖæµÄ°µÎïÖÊÊDz»ÄÜÖ±½Ó¹Û²âµ½µÄ¶«Î÷£¬´æÔÚµÄÒÀ¾ÝÀ´×ÔÓÚÂÝÐýתµÄÐÇϵºÍÐÇÍÅ£¬ÕâЩÐÇϵºÍÐÇÍÅÒÔ×ÔÉíΪÖÐÐĸßËÙÐýת¶øûÓзÖÉ¢¿ªÈ¥£¬½ö¿¿×ÔÉíÖÊÁ¿²úÉúµÄÒýÁ¦Ô¶²»×ãÒÔ°ÑËüÃǼ¯ºÏÔÚÒ»ÆðµÄ£¬Ò»¶¨´æÔÚ°µÎïÖÊ£¬ËüµÄÎüÒýÁ¦×ãÒÔ°ÑÕâЩÐýתµÄÐÇϵÀÎÀÎץס£¬¸ù¾Ý¶Ôijһ˫ÐÇϵͳµÄ¹âѧ²âÁ¿È·¶¨¸ÃË«ÐÇϵͳÖÐÿһ¸öÐÇÌåµÄÖÊÁ¿¶¼ÊÇM£¬Á½ÕßÏà¾àL£¨LÔ¶´óÓÚÐÇÌåµÄÖ±¾¶£©£¬ËüÃÇÕýΧÈÆÁ½ÕßÁ¬ÏßµÄÖеã×öÔ²ÖÜÔ˶¯£®
£¨1£©ÈôûÓÐÆäËûÎïÖÊ´æÔÚ£¬ÊÔÍƶϸÃË«ÐÇϵͳµÄÔ˶¯ÖÜÆÚT£®
£¨2£©ÈôÊÔÑéÉϹ۲⵽µÄÔ˶¯ÖÜÆÚΪT¡¯£¬ÇÒT¡¯£ºT=1£º
£¨N£¾1£©£¬ÎªÁ˽âÊ͹۲âÖÜÆÚT¡¯ºÍ£¨3£©ÖÐÀíÂÛÉÏÍÆËãµÄË«ÐÇÔ˶¯µÄÖÜÆÚT²»Í¬£¬Ä¿Ç°ÓÐÒ»ÖÖÀíÂÛÈÏΪ£¬ÔÚÓîÖæÖпÉÄÜ´æÔÚÒ»ÖÖÓÃÍûÔ¶¾µÒ²¹Û²â²»µ½µÄ°µÎïÖÊ£¬×÷ΪһÖÖ¼ò»¯Ä£ÐÍ£¬ÎÒÃǼٶ¨ÔÚÒÔÕâÁ½¸öÐÇÌåÁ¬ÏßΪֱ¾¶µÄÇòÌåÄÚ¾ùÔÈ·Ö²¼×ÅÕâÖÖ°µÎïÖÊ£¬¶ø²»¿¼ÂÇÆäËû°µÎïÖʵÄÓ°Ï죬ÊÔ¸ù¾ÝÕâһģÐͺÍÉÏÊö¹Û²â½á¹ûÈ·¶¨¸ÃÐÇϵ¼äÕâÖÖ°µÎïÖʵÄÃܶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?°²»ÕÄ£Ä⣩ͼ¼×ºÍͼÒÒ·Ö±ð±íʾÕýÏÒÂö³å²¨ºÍ·½²¨µÄ½»±äµçÁ÷Óëʱ¼äµÄ±ä»¯¹Øϵ£®ÈôʹÕâÁ½ÖÖµçÁ÷·Ö±ðͨ¹ýÁ½¸öÍêÈ«ÏàͬµÄµç×裬Ôò¾­¹ý1minµÄʱ¼ä£¬Á½µç×èÏûºÄµÄµç¹¦W¼×£ºWÒÒÖ®±ÈΪ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸