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°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

2012ÄêÎÒ¹úÐû²¼±±¶·µ¼º½ÏµÍ³ÕýʽÉÌÒµÔËÐУ®±±¶·µ¼º½ÏµÍ³ÓÖ±»³ÆΪ¡°Ë«ÐǶ¨Î»ÏµÍ³¡±£¬¾ßÓе¼º½¡¢¶¨Î»µÈ¹¦ÄÜ£®¡°±±¶·¡±ÏµÍ³ÖÐÁ½¿Å¹¤×÷ÎÀÐǾùÈƵØÐÄ×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£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍø2012ÄêÎÒ¹úÐû²¼±±¶·µ¼º½ÏµÍ³ÕýʽÉÌÒµÔËÐУ®±±¶·µ¼º½ÏµÍ³ÓÖ±»³ÆΪ¡°Ë«ÐǶ¨Î»ÏµÍ³¡±£¬¾ßÓе¼º½¡¢¶¨Î»µÈ¹¦ÄÜ£®±±¶·µ¼º½ÏµÍ³ÖÐÁ½¿Å¹¤×÷ÎÀÐǼ´ÎÀÐÇ1ºÍÎÀÐÇ2ÔÚͬһ¹ìµÀÉÏÈƵØÐÄ×öÔÈËÙÔ²ÖÜÔ˶¯£¬¹ìµÀ°ë¾¶Îªr£¬ÈçͼËùʾ£¬Ä³Ê±¿ÌÎÀÐÇ1ºÍÎÀÐÇ2·Ö±ðλÓÚ¹ìµÀÉϵÄA¡¢BÁ½Î»Öã¨ÎÀÐÇÓëµØÇòÁ¬ÏߵļнÇΪ60¡ã£©£®ÈôÁ½ÎÀÐǾù°´Ë³Ê±Õë·½ÏòÔËÐУ¬µØÇò±íÃæ´¦µÄÖØÁ¦¼ÓËÙ¶ÈΪg£¬µØÇò°ë¾¶ÎªR£¬²»¼ÆÎÀÐǼäµÄÏ໥×÷ÓÃÁ¦£®ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A¡¢µØÇò¶ÔÎÀÐÇ1ºÍÎÀÐÇ2µÄÍòÓÐÒýÁ¦´óСÏàµÈ
B¡¢ÎÀÐÇ1ÓÉλÖÃAÔ˶¯µ½Î»ÖÃBµÄ¹ý³ÌÖÐÍòÓÐÒýÁ¦×öÕý¹¦
C¡¢ÎÀÐÇlÓÉλÖÃAÔ˶¯µ½Î»ÖÃBËùÐèµÄʱ¼äΪ
¦Ðr
3R
r
g
D¡¢ÈôÎÀÐÇlÏòºóÅçÆø£¬ÔòÒ»¶¨ÄÜ×·ÉÏÎÀÐÇ2

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2013-2014ѧÄêËÄ´¨Ê¡¸ßÈýÉÏѧÆÚ¡°Ò»Õ ÎïÀíÄ£ÄâÊÔ¾í£¨¶þ£©£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

2012ÄêÎÒ¹úÐû²¼±±¶·µ¼º½ÏµÍ³ÕýʽÉÌÒµÔËÐС£±±¶·µ¼º½ÏµÍ³ÓÖ±»³ÆΪ¡°Ë«ÐǶ¨Î»ÏµÍ³¡±£¬¾ßÓе¼º½¡¢¶¨Î»µÈ¹¦ÄÜ¡£¡°±±¶·¡±ÏµÍ³ÖÐÁ½¿Å¹¤×÷ÎÀÐǾùÈƵØÐÄ×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¦

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012-2013ѧÄêºÓÄÏÊ¡°²ÑôÊиßÈýµÚ¶þ´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

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¦

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸