³öÏÖ»ðÔÖÍ»·¢Ê¼þʱ£¬Óª¾È±»Î§À§ÈËÔ±×î¹Ø¼üµÄÊÇÕùȡʱ¼ä¡£Ïû·À¶ÓԱΪËõ¶ÌÏÂÂ¥µÄʱ¼ä£¬ÍùÍù±§×ÅÊúÖ±µÄ¸ËÖ±½ÓÏ»¬¡£¼ÙÉèÒ»ÃûÖÊÁ¿Îª60Kg¡¢ÑµÁ·ÓÐËصÄÏû·ÀÔ±´ÓÀëµØ18mµÄÆßÂ¥±§×ÅÊúÖ±µÄ¸ËÒÔ×î¶ÌµÄʱ¼ä»¬Ï¡£ÒÑÖª¸ËµÄÖÊÁ¿Îª200Kg£¬Ïû·À¶ÓÔ±×ŵصÄËٶȲ»ÄÜ´óÓÚ6m/s£¬ÊÖºÍÍȶԸ˵Ä×î´óѹÁ¦Îª1800N£¬ÊÖºÍÍÈÓë¸ËÖ®¼äµÄ¶¯Ä¦²ÁÒòÊýΪ0.5£¬¼ÙÉè¸ËÊǹ̶¨ÔÚµØÃæÉϵģ¬¸ËÔÚˮƽ·½Ïò²»Òƶ¯£¨g=10m/s2£©¡£ÊÔÇó£º
£¨1£©Ïû·À¶ÓԱϻ¬¹ý³ÌÖеÄ×î´óËٶȣ»
£¨2£©Ïû·À¶ÓԱϻ¬¹ý³ÌÖи˶ԵØÃæµÄ×î´óѹÁ¦£»
£¨3) Ïû·À¶ÓԱϻ¬µÄ×î¶Ìʱ¼ä¡£
£¨1£©£¨2£©¸Ë¶ÔµØÃæµÄ×î´óѹÁ¦Îª2900N
£¨3£©×î¶Ìʱ¼ä
¡¾½âÎö¡¿
ÊÔÌâ·ÖÎö£º£¨1£©Ïû·À¶ÓÔ±×ÔÓÉÏÂÂäµÄÄ©ËÙ¶È×î´ó£¬¸ù¾Ý×ÔÓÉÏÂÂäµÄλÒƺÍÔȼõËÙÖ±ÏßÔ˶¯µÄλÒÆΪ18m£¬ÒÔ¼°×ŵØËٶȲ»³¬¹ý6m/s£¬ÔËÓÃÔ˶¯Ñ§¹«Ê½Çó³öÏÂÂäµÄ×î´óËٶȣ®
£¨2£©µ±ÊÖºÍÍȶԸËÓÐ×î´óѹÁ¦£¬¾ÍÓÐ×î´ó»¬¶¯Ä¦²ÁÁ¦£¬ÈËËùÊÜ»¬¶¯Ä¦²ÁÁ¦·½ÏòÏòÉÏ£¬Ôò¸Ë×ÓÊÜ»¬¶¯Ä¦²ÁÁ¦ÏòÏ£¬¶Ô¸Ë×ÓÊÜÁ¦·ÖÎö£¬Çó³öµØÃæ¶Ô¸Ë×ÓµÄÖ§³ÖÁ¦£¬´Ó¶øµÃ³öÏû·À¶ÓԱϻ¬¹ý³ÌÖи˶ԵØÃæµÄ×î´óѹÁ¦£®
£¨3£©ÏÈ×ö×ÔÓÉÂäÌåÔ˶¯£¬È»ºóÒÔ×î´ó¼ÓËÙ¶È×öÔȼõËÙÖ±ÏßÔ˶¯£¬Ê±¼ä×î¶Ì£¬¸ù¾ÝËÙ¶Èʱ¼ä¹«Ê½·Ö±ðÇó³ö×ÔÓÉÂäÌåÔ˶¯Ê±¼äºÍÔȼõËÙÖ±ÏßÔ˶¯µÄʱ¼ä£¬´Ó¶øµÃ³ö×î¶Ìʱ¼ä£®
½â£º£¨1£©ÉèÏû·À¶ÓÔ±¿ªÊ¼½×¶ÎÓÐ×ÔÓÉÏÂÂäµÄÄ©Ëٶȼ´ÎªÏ»¬¹ý³ÌµÄ×î´óËÙ¶Èvm
ÓÐ
Éè¼õËٽ׶εļÓËٶȴóСΪa£¬ÓÉÅ£¶ÙµÚ¶þ¶¨ÂɵÃ
£¨2£©ÒÔ¸ËΪÑо¿¶ÔÏóµÃ
ÓÉÅ£¶ÙµÚÈý¶¨Âɵø˶ԵØÃæµÄ×î´óѹÁ¦Îª2900N
£¨3£©×î¶Ìʱ¼ä
¿¼µã£ºÅ£¶ÙµÚ¶þ¶¨ÂÉ£»ÔȱäËÙÖ±ÏßÔ˶¯µÄλÒÆÓëʱ¼äµÄ¹Øϵ£»ÔȱäËÙÖ±ÏßÔ˶¯µÄËÙ¶ÈÓëλÒƵĹØϵ£®
µãÆÀ£º½â¾ö±¾ÌâµÄ¹Ø¼ü¸ãÇåÏû·ÀÔ±µÄÔ˶¯¹ý³Ì£¬ÖªµÀ¼ÓËÙ¶ÈÊÇ´¦Àí¶¯Á¦Ñ§ÎÊÌâµÄÇÅÁº£®
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012-2013ѧÄêɽÎ÷Ê¡ÁÙ·ÚÒ»Öи߶þÏÂѧÆÚÆÚÖп¼ÊÔÎïÀíÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£º¼ÆËãÌâ
³öÏÖ»ðÔÖÍ»·¢Ê¼þʱ£¬Óª¾È±»Î§À§ÈËÔ±×î¹Ø¼üµÄÊÇÕùȡʱ¼ä¡£Ïû·À¶ÓԱΪËõ¶ÌÏÂÂ¥µÄʱ¼ä£¬ÍùÍù±§×ÅÊúÖ±µÄ¸ËÖ±½ÓÏ»¬¡£¼ÙÉèÒ»ÃûÖÊÁ¿Îª60Kg¡¢ÑµÁ·ÓÐËصÄÏû·ÀÔ±´ÓÀëµØ18mµÄÆßÂ¥±§×ÅÊúÖ±µÄ¸ËÒÔ×î¶ÌµÄʱ¼ä»¬Ï¡£ÒÑÖª¸ËµÄÖÊÁ¿Îª200Kg£¬Ïû·À¶ÓÔ±×ŵصÄËٶȲ»ÄÜ´óÓÚ6m/s£¬ÊÖºÍÍȶԸ˵Ä×î´óѹÁ¦Îª1800N£¬ÊÖºÍÍÈÓë¸ËÖ®¼äµÄ¶¯Ä¦²ÁÒòÊýΪ0.5£¬¼ÙÉè¸ËÊǹ̶¨ÔÚµØÃæÉϵģ¬¸ËÔÚˮƽ·½Ïò²»Òƶ¯£¨g=10m/s2£©¡£ÊÔÇó£º
£¨1£©Ïû·À¶ÓԱϻ¬¹ý³ÌÖеÄ×î´óËٶȣ»
£¨2£©Ïû·À¶ÓԱϻ¬¹ý³ÌÖи˶ԵØÃæµÄ×î´óѹÁ¦£»
£¨3) Ïû·À¶ÓԱϻ¬µÄ×î¶Ìʱ¼ä¡£
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com