ÌâÄ¿ÄÚÈÝ

2012ÄêÎÒ¹úÐû²¼±±¶·µ¼º½ÏµÍ³ÕýʽÉÌÒµÔËÐС£±±¶·µ¼º½ÏµÍ³ÓÖ±»³ÆΪ¡°Ë«ÐǶ¨Î»ÏµÍ³¡±£¬¾ßÓе¼º½¡¢¶¨Î»µÈ¹¦ÄÜ¡£¡°±±¶·¡±ÏµÍ³ÖÐÁ½¿Å¹¤×÷ÐǾùÈƵØÐÄO×öÔÈËÙÔ²ÖÜÔ˶¯£¬¹ìµÀ°ë¾¶Îªr£¬Ä³Ê±¿ÌÁ½¿Å¹¤×÷ÎÀÐÇ·Ö±ðλÓÚ¹ìµÀÉϵÄA¡¢BÁ½Î»Öã¨ÈçͼËùʾ£©£®ÈôÎÀÐǾù˳ʱÕëÔËÐУ¬µØÇò±íÃæ´¦µÄÖØÁ¦¼ÓËÙ¶ÈΪg£¬µØÇò°ë¾¶ÎªR£¬²»¼ÆÎÀÐǼäµÄÏ໥×÷ÓÃÁ¦£®ÔòÒÔÏÂÅжÏÖÐÕýÈ·µÄÊÇ£¨   £©

A£®ÕâÁ½¿ÅÎÀÐǵļÓËٶȴóСÏàµÈ£¬¾ùΪ 

B£®ÎÀÐÇlÓÉλÖÃAÔ˶¯ÖÁλÖÃBËùÐèµÄʱ¼äΪ

C£®ÎÀÐÇlÏòºóÅçÆø¾ÍÒ»¶¨ÄÜ×·ÉÏÎÀÐÇ2

D£®ÎÀÐÇ1ÓÉλÖÃAÔ˶¯µ½Î»ÖÃBµÄ¹ý³ÌÖÐÍòÓÐÒýÁ¦×öÕý¹¦

 

¡¾´ð°¸¡¿

A

¡¾½âÎö¡¿ÕâÁ½¿ÅÎÀÐǾàµØÃæ¸ß¶ÈÏàµÈ£¬Æä¼ÓËٶȴóСÏàµÈ£¬¾ùΪGM/r2=£¬Ñ¡ÏîAÕýÈ·£»ÓÉGMm/r2=mr¦Ø2, ¦Ø=2¦Ð/T¡¢GMm/R2=mgÁªÁ¢½âµÃÎÀÐÇÔËÐÐÖÜÆÚT=2¦Ð,ÎÀÐÇlÓÉλÖÃAÔ˶¯ÖÁλÖÃBËùÐèµÄʱ¼äΪT/6=,Ñ¡ÏîB´íÎó£»ÎÀÐÇlÏòºóÅçÆø£¬ËÙ¶ÈÔö´ó×öÀëÐÄÔ˶¯£¬¸ß¶ÈÔö¼Ó£¬ËٶȼõС£¬²»ÄÜ×·ÉÏÎÀÐÇ2£¬Ñ¡ÏîC´íÎó£»ÎÀÐÇ1ÓÉλÖÃAÔ˶¯µ½Î»ÖÃBµÄ¹ý³ÌÖУ¬ÍòÓÐÒýÁ¦·½ÏòÓëλÒÆ·½Ïò´¹Ö±£¬ÍòÓÐÒýÁ¦²»×ö¹¦£¬Ñ¡ÏîD´íÎó

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø