ijÎïÀíÐËȤС×éÔÚ¿ÎÍâʵ¼ù»î¶¯ÖУ¬ÖÆ×÷ÁËÒ»¸ö²âÁ¿ÖÊÁ¿µÄµç×Ó³Ó£¬ÆäÔ­ÀíÈçͼÖеÄÐéÏß¿òËùʾ£¬ËüÖ÷ÒªÓÐËIJ¿·Ö¹¹³É£ºÍÐÅ̺ÍѹÁ¦¸Ü¸ËABO£¬¶¨Öµµç×èR£¬Ñ¹Á¦´«¸ÐÆ÷R£¨µç×èÖµ»áËæËùÊÜѹÁ¦´óС·¢Éú±ä»¯µÄ¿É±äµç×裬ËüËæѹÁ¦´óСµÄ±ä»¯¹ØϵÈçÓÒͼÖеÄR-FͼÏߣ©£¬ÏÔʾÖÊÁ¿´óСµÄÒDZíV£¨ÊµÖÊÊǵçѹ±í£©£®ÆäÖÐAB£ºBO=4£º1£®ÉèÍÐÅ̺͸ܸË×é¼þµÄÖÊÁ¿¾ù¿ÉºöÂÔ²»¼Æ£¬µçÔ´µçѹºãΪ6V£®£¨gÈ¡10N/kg£©
£¨1£©ÍÐÅÌÉϲ»·ÅÎïÌåʱ£¬µçѹ±íµÄʾÊýÈçÏÂͼËùʾ£¬Ôò¶¨Öµµç×èRµÄ´óСΪ¶àÉÙ£¿
£¨2£©¸Ãµç×Ó³ÓÄܹ»³ÆÁ¿µÄ×î´óÖÊÁ¿ÊǶàÉÙ£¿
£¨3£©Ä³Í¬Ñ§ÔÚÒ»²£Á§¸×Öе¹ÉÏ°ë¸×Ë®£¬·ÅÔڸõç×Ó³ÓÍÐÅÌÉÏ£¬È»ºóÓõ¯»É³Óͨ¹ýϸÏßÊúÖ±Ðü¹ÒÒ»ÎïÌ壬½«ÎïÌåÍêÈ«½þûÔÚË®ÖУ¨ÎïÌåÓë²£Á§¸×±ÚÎÞ½Ó´¥£©ºó£¬¶ÁµÃµçѹ±íʾÊýΪ2V£¬µ¯»É³ÓʾÊýΪF=14N£¬ÒÑÖª²£Á§¸×ºÍË®µÄ×ÜÖÊÁ¿ÎªM=6.0Kg£®ÊÔÇó¸ÃÎïÌåÔÚË®ÖÐÊܵ½µÄ¸¡Á¦´óС£®

¡¾´ð°¸¡¿·ÖÎö£º£¨1£©ÓÉͼʾµçѹ±í¶Á³öµçѹ±íʾÊý£¬ÍÐÅ̲»·ÅÎïÌåʱ£¬Ñ¹Á¦´«¸ÐÆ÷Êܵ½µÄѹÁ¦ÎªÁ㣬ÓÉR-FͼÏóÇó³ö´ËʱѹÁ¦´«¸ÐÆ÷µÄ×èÖµ£¬ÓÉ´®Áªµç·ÌصãÇó³öѹÁ¦´«¸ÐÆ÷µçѹ£¬ÓÉÅ·Ä·¶¨ÂÉÇó³öµç·µçÁ÷£¬×îºóÓÉÅ·Ä·¶¨ÂÉÇó³ö¶¨Öµµç×è×èÖµ£®
£¨2£©´«¸ÐÆ÷Êܵ½µÄѹÁ¦×î´óʱ£¬Ëù²âÎïÌåÖÊÁ¿×î´ó£¬ÓÉR-FͼÏóÇó³ö×î´óѹÁ¦£¬È»ºóÓɸܸËƽºâÌõ¼þÇó³öËù²âÎïÌåµÄ×î´óÖÊÁ¿£®
£¨3£©¸ù¾Ýµçѹ±íʾÊý£¬ÓÉ´®Áªµç·Ìص㼰ŷķ¶¨ÂÉÇó³öѹÁ¦´«¸ÐÆ÷½ÓÈëµç·µÄ×èÖµ£¬
ÓÉR-FͼÏóÇó³ö´ËʱѹÁ¦´«¸ÐÆ÷Êܵ½µÄѹÁ¦£¬È»ºóÓɸܸËƽºâÌõ¼þÇó³öÍÐÅ̵ÄѹÁ¦£¬È»ºóÇó³öÎïÌåÊܵ½µÄ¸¡Á¦£®
½â´ð£º½â£º£¨1£©ÓÉͼʾµçѹ±í¿ÉÖª£¬µçѹ±íʾÊýU=1V£¬
ÓÉR-FͼÏó¿ÉÖª£¬´ËʱѹÁ¦´«¸ÐÆ÷×èÖµR=30¦¸£¬
ѹǿ´«¸ÐÆ÷µçѹUR=U-U=6V-1V=5V£¬
µç·µçÁ÷I===A£¬
¡ßI=£¬
¡àµç×èR===6¦¸£»
£¨2£©ÓÉR-FͼÏó¿ÉÖª£¬Ñ¹Á¦´«¸ÐÆ÷ËùÄܳÐÊܵÄ×î´óѹÁ¦F=40N£¬
AB£ºBO=4£º1£¬AO£ºBO=5£º1£¬
ÓɸܸËƽºâÌõ¼þµÃ£ºF×AO=mg×BO£¬
ÔòËù²âÁ¿µÄ×î´óÖÊÁ¿m==×=20kg£»
£¨3£©µçѹ±íʾÊýU¡ä=2V£¬´Ëʱѹǿ´«¸ÐÆ÷µçѹUR¡ä=U-U¡ä=6V-2V=4V£¬
¡ß´®Áªµç·µçÁ÷´¦´¦ÏàµÈ£¬I=£¬
¡à====£¬
´«¸ÐÆ÷µç×è×èÖµR=2R=2×6¦¸=12¦¸£¬
ÓÉR-F¿ÉÖª´Ëʱ´«¸ÐÆ÷Êܵ½Ñ¹Á¦F¡ä=×12¦¸=16N£¬
ÓɸܸËƽºâÌõ¼þµÃ£ºF¡ä×AO=FB×BO£¬
¼´F¡ä×AO=FB×BO£¬FB==16N×=90N£¬
ÎïÌå½þÔÚË®ÖÐÊܵ½µÄ¸¡Á¦µÈÓÚËü¶ÔË®µÄѹÁ¦£¬
ÓÉƽºâÌõ¼þµÃ£ºFB=Mg+F¸¡£¬
ÎïÌåÊܵ½µÄ¸¡Á¦F¸¡=FB-Mg=90N-6kg×10N/kg=30N£®
´ð£º£¨1£©¶¨Öµµç×èRµÄ´óСΪ6¦¸£®
£¨2£©¸Ãµç×Ó³ÓÄܹ»³ÆÁ¿µÄ×î´óÖÊÁ¿ÊÇ20kg£®
£¨3£©ÎïÌåÔÚË®ÖÐÊܵ½µÄ¸¡Á¦´óСΪ30N£®
µãÆÀ£º±¾ÌâÄѶȽϴó£¬ÓÉR-FͼÏóÕÒ³öѹÁ¦Óëµç×èµÄ¹Øϵ¡¢ÊìÁ·Ó¦Óô®Áªµç·Ìص㼰ŷķ¶¨ÂÉ¡¢¸Ü¸ËƽºâÌõ¼þÊÇÕýÈ·½âÌâµÄ¹Ø¼ü£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøijУÎïÀíÐËȤС×éÔÚ¿ÎÍâʵ¼ù»î¶¯ÖУ¬ÖÆ×÷ÁËÒ»¸ö²âÁ¿ÖÊÁ¿µÄµç×Ó³Ó£¬ÆäÔ­ÀíÈçͼÖеÄÐéÏß¿òËùʾ£¬ËüÖ÷ÒªÓÐËIJ¿·Ö¹¹³É£ºÌ¤°åºÍѹÁ¦¸Ü¸ËABO£¬¶¨Öµµç×èR0£¬Ñ¹Á¦´«¸ÐÆ÷R£¨µç×èÖµ»áËæËùÊÜѹÁ¦´óС·¢Éú±ä»¯µÄ¿É±äµç×裩£¬ÏÔʾÖÊÁ¿´óСµÄÒDZíV£¨ÊµÖÊÊǵçѹ±í£©£®ÆäÖÐAB£ºBO=4£º1£¬ÇÒÒÑ֪ѹÁ¦´«¸ÐÆ÷RµÄµç×èÓëËùÊÜѹÁ¦F±ä»¯µÄ¹ØϵÈç×óÏÂͼÏóËùʾ£®£¨gÈ¡10N/kg£©Éè̤°åºÍ¸Ü¸Ë×é¼þµÄÖÊÁ¿¿ÉÒÔºöÂÔ²»¼Æ£¬½ÓͨµçÔ´ºó£¬µçÔ´µçѹºãΪ6V£®
£¨1£©Ì¤°å¿ÕÔØʱ£¬µçѹ±íµÄʾÊýÈçͼËùʾ£¬Çó¶¨Öµµç×èR0µÄ´óС£®
£¨2£©µ±ÔṲ́°åÉÏ·ÅÖÃ50kgµÄÎïÌåʱ£¬µçѹ±íµÄʾÊýÊǶà´ó£¿
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2012?ÉäºéÏØÄ£Ä⣩ijÎïÀíÐËȤС×éÔÚ¿ÎÍâʵ¼ù»î¶¯ÖУ¬ÖÆ×÷ÁËÒ»¸ö²âÁ¿ÖÊÁ¿µÄµç×Ó³Ó£¬ÆäÔ­ÀíÈçͼÖеÄÐéÏß¿òËùʾ£¬ËüÖ÷ÒªÓÐËIJ¿·Ö¹¹³É£ºÍÐÅ̺ÍѹÁ¦¸Ü¸ËABO£¬¶¨Öµµç×èR0£¬Ñ¹Á¦´«¸ÐÆ÷R£¨µç×èÖµ»áËæËùÊÜѹÁ¦´óС·¢Éú±ä»¯µÄ¿É±äµç×裬ËüËæѹÁ¦´óСµÄ±ä»¯¹ØϵÈçÓÒͼÖеÄR-FͼÏߣ©£¬ÏÔʾÖÊÁ¿´óСµÄÒDZíV£¨ÊµÖÊÊǵçѹ±í£©£®ÆäÖÐAB£ºBO=4£º1£®ÉèÍÐÅ̺͸ܸË×é¼þµÄÖÊÁ¿¾ù¿ÉºöÂÔ²»¼Æ£¬µçÔ´µçѹºãΪ6V£®£¨gÈ¡10N/kg£©
£¨1£©ÍÐÅÌÉϲ»·ÅÎïÌåʱ£¬µçѹ±íµÄʾÊýÈçÏÂͼËùʾ£¬Ôò¶¨Öµµç×èR0µÄ´óСΪ¶àÉÙ£¿
£¨2£©¸Ãµç×Ó³ÓÄܹ»³ÆÁ¿µÄ×î´óÖÊÁ¿ÊǶàÉÙ£¿
£¨3£©Ä³Í¬Ñ§ÔÚÒ»²£Á§¸×Öе¹ÉÏ°ë¸×Ë®£¬·ÅÔڸõç×Ó³ÓÍÐÅÌÉÏ£¬È»ºóÓõ¯»É³Óͨ¹ýϸÏßÊúÖ±Ðü¹ÒÒ»ÎïÌ壬½«ÎïÌåÍêÈ«½þûÔÚË®ÖУ¨ÎïÌåÓë²£Á§¸×±ÚÎÞ½Ó´¥£©ºó£¬¶ÁµÃµçѹ±íʾÊýΪ2V£¬µ¯»É³ÓʾÊýΪF=14N£¬ÒÑÖª²£Á§¸×ºÍË®µÄ×ÜÖÊÁ¿ÎªM=6.0Kg£®ÊÔÇó¸ÃÎïÌåÔÚË®ÖÐÊܵ½µÄ¸¡Á¦´óС£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

ijÎïÀíÐËȤС×éÔÚ¿ÎÍâʵ¼ù»î¶¯ÖУ¬ÖÆ×÷ÁËÒ»¸ö²âÁ¿ÖÊÁ¿µÄµç×Ó³Ó£¬ÆäÔ­ÀíÈçͼÖеÄÐéÏß¿òËùʾ£¬ËüÖ÷ÒªÓÐËIJ¿·Ö¹¹³É£ºÍÐÅ̺ÍѹÁ¦¸Ü¸ËABO£¬¶¨Öµµç×èR0£¬Ñ¹Á¦´«¸ÐÆ÷R£¨µç×èÖµ»áËæËùÊÜѹÁ¦´óС·¢Éú±ä»¯µÄ¿É±äµç×裬ËüËæѹÁ¦´óСµÄ±ä»¯¹ØϵÈçÓÒͼÖеÄR-FͼÏߣ©£¬ÏÔʾÖÊÁ¿´óСµÄÒDZíV£¨ÊµÖÊÊǵçѹ±í£©£®ÆäÖÐAB£ºBO=4£º1£®ÉèÍÐÅ̺͸ܸË×é¼þµÄÖÊÁ¿¾ù¿ÉºöÂÔ²»¼Æ£¬µçÔ´µçѹºãΪ6V£®£¨gÈ¡10N/kg£©
£¨1£©ÍÐÅÌÉϲ»·ÅÎïÌåʱ£¬µçѹ±íµÄʾÊýÈçÏÂͼËùʾ£¬Ôò¶¨Öµµç×èR0µÄ´óСΪ¶àÉÙ£¿
£¨2£©¸Ãµç×Ó³ÓÄܹ»³ÆÁ¿µÄ×î´óÖÊÁ¿ÊǶàÉÙ£¿
£¨3£©Ä³Í¬Ñ§ÔÚÒ»²£Á§¸×Öе¹ÉÏ°ë¸×Ë®£¬·ÅÔڸõç×Ó³ÓÍÐÅÌÉÏ£¬È»ºóÓõ¯»É³Óͨ¹ýϸÏßÊúÖ±Ðü¹ÒÒ»ÎïÌ壬½«ÎïÌåÍêÈ«½þûÔÚË®ÖУ¨ÎïÌåÓë²£Á§¸×±ÚÎÞ½Ó´¥£©ºó£¬¶ÁµÃµçѹ±íʾÊýΪ2V£¬µ¯»É³ÓʾÊýΪF=14N£¬ÒÑÖª²£Á§¸×ºÍË®µÄ×ÜÖÊÁ¿ÎªM=6.0Kg£®ÊÔÇó¸ÃÎïÌåÔÚË®ÖÐÊܵ½µÄ¸¡Á¦´óС£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2012-2013ѧÄêɽÎ÷Ê¡³¤ÖÎÊлݷáÖÐѧ¾ÅÄ꼶£¨ÉÏ£©ÆÚÄ©ÎïÀíÄ£ÄâÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

ijУÎïÀíÐËȤС×éÔÚ¿ÎÍâʵ¼ù»î¶¯ÖУ¬ÖÆ×÷ÁËÒ»¸ö²âÁ¿ÖÊÁ¿µÄµç×Ó³Ó£¬ÆäÔ­ÀíÈçͼÖеÄÐéÏß¿òËùʾ£¬ËüÖ÷ÒªÓÐËIJ¿·Ö¹¹³É£ºÌ¤°åºÍѹÁ¦¸Ü¸ËABO£¬¶¨Öµµç×èR£¬Ñ¹Á¦´«¸ÐÆ÷R£¨µç×èÖµ»áËæËùÊÜѹÁ¦´óС·¢Éú±ä»¯µÄ¿É±äµç×裩£¬ÏÔʾÖÊÁ¿´óСµÄÒDZíV£¨ÊµÖÊÊǵçѹ±í£©£®ÆäÖÐAB£ºBO=4£º1£¬ÇÒÒÑ֪ѹÁ¦´«¸ÐÆ÷RµÄµç×èÓëËùÊÜѹÁ¦F±ä»¯µÄ¹ØϵÈç×óÏÂͼÏóËùʾ£®£¨gÈ¡10N/kg£©Éè̤°åºÍ¸Ü¸Ë×é¼þµÄÖÊÁ¿¿ÉÒÔºöÂÔ²»¼Æ£¬½ÓͨµçÔ´ºó£¬µçÔ´µçѹºãΪ6V£®
£¨1£©Ì¤°å¿ÕÔØʱ£¬µçѹ±íµÄʾÊýÈçͼËùʾ£¬Çó¶¨Öµµç×èRµÄ´óС£®
£¨2£©µ±ÔṲ́°åÉÏ·ÅÖÃ50kgµÄÎïÌåʱ£¬µçѹ±íµÄʾÊýÊǶà´ó£¿


²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸