£¨2005?×ÊÑô£©×ÊÑôÊÐijµ¥Î»»ý¼«²Î¼ÓËÄ´¨Ê¡µÚ°Ë½ì¡°ÈýÓÅһѧ¡±´´½¨ÎÄÃ÷³ÇÊоºÈü»î¶¯£¬¼Æ»®¶Ô°ì¹«´óÂ¥Íâǽ½øÐÐÇå½à¹¤×÷£®ÈçͼËùʾ£¬ÈôÊ©¹¤µõÀºÖÊÁ¿m1=60kg£¬Çå½àÉ豸ÖÊÁ¿m2=30kg£¬ÏÖÐèÒª½«È˺ÍÉ豸´ÓÈýÂ¥µ×ÌáÉýµ½Ê®¶þÂ¥¶¥£¬Ò»×ÔÖØG=600NµÄÇå½à¹¤ÈËÓÃÁ¦500NÒÔͼʾ·½Ê½Íê³É£®ÒÑ֪¥²ã¸ß¶È¾ùΪ3m£¬È¡g=10N/kg£¬²»¼ÆÉþÖؼ°¸÷´¦Ä¦²Á£®Çó£º
£¨1£©´ËÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐËù×öµÄ×ܹ¦Îª¶àÉÙ£¿
£¨2£©´ËÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐ×ö¹¦µÄЧÂÊΪ¶àÉÙ£¿
£¨3£©Îª±£Ö¤´ËÈËÄÜÒÔÕâÖÖ·½Ê½Éý½µµõÀº£¬µõÀºÄÚ×î¶à»¹ÄÜ×°ÔضàÖصÄÎï¼þ£¿
·ÖÎö£º£¨1£©ÒÑÖªÇå½à¹¤ÈËÓÃÁ¦500N£¬ÈýÂ¥µ×ÌáÉýµ½Ê®¶þÂ¥¶¥£¬ÔòÉÏÉýµÄ¸ß¶Èh=9¡Á3m=27m£¬ÔÙÀûÓÃW=Gh¼´¿ÉÇóµÃÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐËù×öµÄ×ܹ¦
£¨2£©ÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐ×öµÄÓÐÓù¦WÓÐÓÃ=Gh£¬ÔÙÀûÓæÇ=
WÓÐÓÃ
W×Ü
Çó×ö¹¦µÄЧÂÊ£®
£¨3£©Îª±£Ö¤´ËÈËÄÜÒÔÕâÖÖ·½Ê½Éý½µµõÀº£¬µõÀºÄÚÄÜ×°ÔØÎï¼þµÄ×ÜÖØÁ¦ÎªÇå½à¹¤ÈË×ÔÉíÖØÁ¦µÄ
1
3
£®
½â´ð£º½â£º£¨1£©ÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐËù×öµÄ×ܹ¦W=G×Üh=[£¨60kg+30kg£©¡Á10N/kg+600N]¡Á27m=40500J£»
£¨2£©ÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐ×öµÄÓÐÓù¦WÓÐÓÃ=Gh=[£¨30kg¡Á10N/kg£©+600N]¡Á30m=27000J£¬
ÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐ×ö¹¦µÄЧÂʦÇ=
WÓÐÓÃ
W×Ü
¡Á100%=
27000J
45000J
¡Á100%=60%£¬
£¨3£©É軹ÄÜG1ÖصÄÎï¼þ£¬Ôò
¡¾(60kg+30kg)¡Á10N/kg+600N+G1¡¿
3
=600N£¬
½âµÃG1=300N£®
´ð£º£¨1£©´ËÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐËù×öµÄ×ܹ¦Îª40500J£®
£¨2£©´ËÈËÔÚÌáÉýµõÀº¹ý³ÌÖÐ×ö¹¦µÄЧÂÊΪ60%£¬
£¨3£©Îª±£Ö¤´ËÈËÄÜÒÔÕâÖÖ·½Ê½Éý½µµõÀº£¬µõÀºÄÚ×î¶à»¹ÄÜ×°ÔØ300NÖصÄÎï¼þ£®
µãÆÀ£º±¾ÌâµÄ¹Ø¼üÊdzе£ÎïÖصÄÉþ×Ó¹ÉÊýµÄÈ·¶¨£¬ÒòΪÈËÕ¾ÔÚµõÀºÉÏ£¬´Ó¶¨»¬ÂÖÉÏÒý³öµÄÉþ×ÓÒ²³Ðµ£ÎïÖØ£¬ÕâÊDZ¾ÌâµÄÒ×´íµã£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2005?×ÊÑô£©µ±Î¶Ƚµµ½ºÜµÍʱ£¬Ä³Ð©½ðÊôµ¼ÌåµÄµç×è»áͻȻÏûʧ£¬ÕâÖÖÏÖÏó±»³ÆΪ¡°³¬µ¼¡±£®Ðí¶à¿Æѧ¼Ò¶¼ÔÚ¼ÓÇ¿Ñо¿£¬Á¦Í¼ÊµÏÖ³£ÎÂϵij¬µ¼£®¼ÙÈçijÌìʵÏÖÁËÕâһĿ±ê£¬ËùÓнðÊôµ¼Ì嶼ûÓÐÁ˵ç×裬ÔòÏÖÐеÄÏÂÁеçÆ÷É豸Öв»ÄÜÕý³£¹¤×÷µÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2005?×ÊÑô£©ÇëÄãд³öÈçͼËùʾµÄÁ½¸ö±êÖ¾µÄº¬Ò壺
¼×
½ûÖ¹ÃùµÑ
½ûÖ¹ÃùµÑ
£»
ÒÒ
¸ßѹΣÏÕ
¸ßѹΣÏÕ
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2005?×ÊÑô£©ÏÄÌì¶Ô×ÅÈÈ¿ªË®¡°´µÆø¡±¿ÉÒÔʹÆä±äÁ¹ÊÇÒòΪ¼Ó¿ìÁË¿ªË®µÄ
Õô·¢
Õô·¢
¶øʹˮνµµÍ¸ü¿ì£»¶¬Ìì¶Ô׎©ÀäµÄÊÖ¡°ºÇÆø¡±¿ÉÒÔʹÆä¾õµÃůºÍÊÇÒòΪºô³öµÄÈÈË®ÕôÆøÓöÀäºó
Òº»¯
Òº»¯
·ÅÈÈʹÊֵıíÃæζÈÉý¸ß£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2005?×ÊÑô£©Ð¡¸Õͬѧ¼ÒÓÐһ̨µçÈÈË®Æ÷£¬ÃúÅÆÈçϱíËùʾ£®
СÌì¶ì¡°À¶½ð¸Õ¡±XCD-50BÐÍÈ«×Ô¶¯µçÈÈË®Æ÷
¶î¶¨¹¦ÂÊ£¨kW£© 2 ¼ÓÈÈ·½Ê½ µç¼ÓÈÈÆ÷
¶î¶¨µçѹ£¨V£© 220 Àà±ð ·À´¥µç±£»¤Ò»Àà
ζÈÉ趨·¶Î§£¨¡æ£© 20¡«90 ¾»ÖØ£¨kg£© 20
ÈÝÁ¿£¨L£© 50 Õû»úÍâÐγߴ磨mm£© 530¡Á§¶400
³ö³§Ê±¼ä 2005Äê3ÔÂ2ÈÕ
¸ù¾ÝÃúÅÆËùÌṩµÄÐÅÏ¢£¬Çó£º
£¨1£©¸ÃµçÈÈË®Æ÷µçÈÈË¿Õý³£¹¤×÷ʱµÄµç×èÊǶà´ó£¿
£¨2£©ÈôÏÄÌìÓõç¸ß·åʱ¼ÒÍ¥µç·µÄʵ¼ÊµçѹֻÓÐ198V£¬²»¿¼ÂǵçÈÈË¿µç×èËæζȵı仯£¬ÔòµçÈÈË®Æ÷¹¤×÷µÄʵ¼Ê¹¦ÂÊΪ¶àÉÙ£¿
£¨3£©Èô½«ÈÈË®Æ÷´¢Ë®Í°×°Âú³õÎÂΪ20¡æµÄË®£¬µçÈÈË®Æ÷ÔڶµçѹϹ¤×÷£¬ÆäЧÂÊΪ80%£¬Ë®µÄ±ÈÈÈÈÝΪ4.2¡Á103J/£¨kg?¡æ£©£¬ÔòÒª°ÑÕâЩˮ¼ÓÈȵ½Ï´ÔèËùÐèµÄ40¡æÒªÓö೤ʱ¼ä£¿
£¨4£©¼ÙÉèÏ´ÔèÒ»´ÎÇ¡ºÃÓÃÍêһͰˮ£¬°´ÕÕ£¨3£©ÎʵĽá¹ûºÍ×ÊÑôÊÐÄ¿Ç°Ö´ÐеÄÃñÓõç¼ÛA0=0.50Ôª/£¨kW?h£©£¬ÔòÏ´Ò»´ÎÔèËù»¨·ÑµÄÈËÃñ±ÒÊǶàÉÙ£¿

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸