ÌâÄ¿ÄÚÈÝ

19£®Èçͼ£¬Ò»¹â»¬µÄÇỬÂÖÓÃϸÉþOO'Ðü¹ÒÓÚOµã£»ÁíһϸÉþ¿ç¹ý»¬ÂÖ£¬ÆäÒ»¶ËÐü¹ÒÎï¿éa£¬ÁíÒ»¶ËϵһλÓÚˮƽ´Ö²Ú×ÀÃæÉϵÄÎï¿éb£®ÍâÁ¦FÏòÓÒÉÏ·½À­b£¬Õû¸öϵͳ´¦ÓÚ¾²Ö¹×´Ì¬£®ÈôF·½Ïò²»±ä£¬´óСÔÚÒ»¶¨·¶Î§Äڱ仯£¬Îï¿ébÈÔʼÖÕ±£³Ö¾²Ö¹£¬Ôò£¨¡¡¡¡£©
A£®ÉþOO'µÄÕÅÁ¦²»±ä
B£®Îï¿ébËùÊܵ½µÄÖ§³ÖÁ¦ºÍĦ²ÁÁ¦µÄºÏÁ¦²»±ä
C£®Á¬½ÓaºÍbµÄÉþµÄÕÅÁ¦Ò²ÔÚÒ»¶¨·¶Î§Äڱ仯
D£®Îï¿ébÓë×ÀÃæ¼äµÄĦ²ÁÁ¦Ò²ÔÚÒ»¶¨·¶Î§Äڱ仯

·ÖÎö ±¾ÌâץסÕû¸öϵͳ´¦ÓÚ¾²Ö¹×´Ì¬£¬ÓÉaƽºâ¿ÉÖª£¬Éþ×ÓÀ­Á¦±£³Ö²»±ä£¬ÔÙ¸ù¾ÝƽºâÌõ¼þÓÉFµÄ´óС±ä»¯ÇóµÃÎï¿ébËùÊܸ÷Á¦µÄ±ä»¯Çé¿ö£®

½â´ð ½â£ºAC¡¢ÓÉÓÚÕû¸öϵͳ´¦ÓÚ¾²Ö¹×´Ì¬£¬ËùÒÔ»¬ÂÖÁ½²àÁ¬½ÓaºÍbµÄÉþ×ӵļнDz»±ä£»Îï¿éaÖ»ÊÜÖØÁ¦ÒÔ¼°Éþ×ÓµÄÀ­Á¦£¬ÓÉÓÚÎïÌåaƽºâ£¬ÔòÁ¬½ÓaºÍbµÄÉþ×ÓÕÅÁ¦T±£³Ö²»±ä£»ÓÉÓÚÉþ×ÓµÄÕÅÁ¦¼°¼Ð½Ç¾ù²»±ä£¬ËùÒÔOO¡äÖеÄÕÅÁ¦±£³Ö²»±ä£¬¹ÊAÕýÈ·£¬C´íÎó£»
BD¡¢b´¦ÓÚ¾²Ö¹¼´Æ½ºâ״̬£¬¶ÔbÊÜÁ¦·ÖÎö£¬Á¦TÓëÁ¦FÓëxÖáËù³É¼Ð½Ç¾ù±£³Ö²»±ä£¬ÓÉƽºâÌõ¼þ¿ÉµÃ£º
N+Fsin¦Á+Tsin¦È-mg=0
Fcos¦Á+f-Tcos¦È=0
Óɴ˿ɵãºN=mg-Fsin¦Á-Tsin¦È
ÓÉÓÚTµÄ´óС²»±ä£¬¿É¼ûµ±F´óС·¢Éú±ä»¯Ê±£¬Ö§³ÖÁ¦µÄ´óСҲÔÚÒ»¶¨·¶Î§Äڱ仯
f=Tcos¦È-Fcos¦Á
ÓÉÓÚTµÄ´óС²»±ä£¬µ±F´óС·¢Éú±ä»¯Ê±£¬b¾²Ö¹¿ÉµÃĦ²ÁÁ¦µÄ´óСҲÔÚÒ»¶¨·¶Î§ÄÚ·¢Éú±ä»¯£¬Ö§³ÖÁ¦ÓëĦ²ÁÁ¦µÄºÏÁ¦ÓëÖØÁ¦ºÍÀ­Á¦µÄºÏÁ¦´óСÏàµÈ£¬·½ÏòÏà·´£¬¹ÊÖ§³ÖÁ¦ÓëĦ²ÁÁ¦µÄºÏÁ¦ÔÚÒ»¶¨·¶Î§Äڱ仯£¬¹ÊB´íÎó£¬DÕýÈ·£®
¹ÊÑ¡£ºAD£®

µãÆÀ ½â¾ö±¾ÌâµÄ¹Ø¼üÊÇץסϵͳ¾ù´¦ÓÚ¾²Ö¹×´Ì¬£¬ÓÉƽºâÌõ¼þ·ÖÎöÇó½â£¬¹Ø¼üÊÇÏÈÓÉƽºâÌõ¼þÇóµÃÉþÖÐÕÅÁ¦´óС²»±ä£¬ÔÙÓÉ´Ë·ÖÎöbµÄƽºâ¼´¿É·ÖÎö¸÷Á¦µÄ±ä»¯£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø