ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ.ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵ´óÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX£­3Ë«ÐÇϵͳ£¬ÈçͼËùʾ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É.Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËûÌìÌåµÄÓ°Ï죬A¡¢BΧÈÆÁ½ÕßÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä.ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇ AµÄËÙÂÊ vºÍÔËÐÐÖÜÆÚ T.

(1)¿É¼ûÐÇAËùÊÜ°µÐÇ BµÄÒýÁ¦ FA ¿ÉµÈЧΪλÓÚ Oµã´¦ÖÊÁ¿Îªm¡äµÄÐÇÌå(ÊÓΪÖʵã)¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪ m1¡¢m2£¬ÊÔÇóm¡ä. (ÓÃm1¡¢m2 ±íʾ)

(2)Çó°µÐÇBµÄÖÊÁ¿m2 Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1 Ö®¼äµÄ¹Øϵʽ.

(3)ºãÐÇÑÝ»¯µ½Ä©ÆÚ£¬Èç¹ûÆäÖÊÁ¿´óÓÚÌ«ÑôÖÊÁ¿ms µÄ2±¶£¬Ëü½«ÓпÉÄܳÉΪºÚ¶´.Èô¿É¼ûÐÇAµÄËÙÂÊv£½2.7¡Á105 m/s£¬ÔËÐÐÖÜÆÚT£½4.7¦Ð¡Á104 s£¬ÖÊÁ¿m1£½6ms£¬ÊÔͨ¹ý¹ÀËãÀ´ÅжϰµÐÇBÓпÉÄÜÊǺڶ´Â𣿠(G£½6.67¡Á10£­11  N¡¤m2/kg2£¬ms£½2.0¡Á1030 kg)[2006Äê¸ß¿¼¡¤Ìì½òÀí×Û¾í]

½âÎö£º(1)Éè A¡¢BµÄÔ²¹ìµÀ°ë¾¶·Ö±ðΪ r1¡¢ r2 £¬ÓÉÌâÒâÖª£¬A¡¢B×öÔÈËÙÔ²ÖÜÔ˶¯µÄ½ÇËÙ¶ÈÏàͬ£¬ÉèÆäΪ¦Ø.ÓÉÅ£¶ÙÔ˶¯¶¨ÂÉ£¬ÓУº

FA£½m1 ¦Ø2r1

FB£½m2¦Ø2r2

FA£½FB

ÉèA¡¢BÖ®¼äµÄ¾àÀëΪr£¬ÓÖr£½r1£«r2£¬ÓÉÉÏÊö¸÷ʽµÃ£º

r£½r1

ÓÉÍòÓÐÒýÁ¦¶¨ÂÉ£¬ÓУº

FA£½G

ÁªÁ¢½âµÃ£ºFA£½G

ÁîFA£½G

±È½Ï¿ÉµÃ£ºm¡ä£½.

¡¡¡¡(2)ÓÉÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬ÓУº

 G£½m1

¿É¼ûÐÇAµÄ¹ìµÀ°ë¾¶r1£½

½«m¡ä´úÈ룬¿É½âµÃ£º£½.

(3)½«m1£½6ms´úÈëÉÏʽ£¬µÃ£º

£½

´úÈëÊý¾ÝµÃ£º£½3.5ms

Éèm2£½nms(n>0)£¬¿ÉµÃ£º

£½ms£½3.5ms

¿É¼û£¬µÄÖµËænµÄÔö´ó¶øÔö´ó£¬ÊÔÁîn£½2£¬µÃ£º

ms£½0.125ms<3.5ms

¹Ên±Ø´óÓÚ2£¬¼´°µÐÇBµÄÖÊÁ¿m2±Ø´óÓÚ2ms.Óɴ˵óö½áÂÛ£º°µÐÇBÓпÉÄÜÊǺڶ´.

¡¡¡¡´ð°¸£º(1)¡¡(2)£½

(3)ÓпÉÄÜ

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2006?Ìì½ò£©ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ£®ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵ´óÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX-3Ë«ÐÇϵͳ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É£®½«Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËûÌìÌåµÄÓ°Ï죬A¡¢BΧÈÆÁ½ÕßÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä£¬£¨Èçͼ£©Ëùʾ£®ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇAµÄËÙÂÊvºÍÔËÐÐÖÜÆÚT£®
£¨1£©¿É¼ûÐÇAËùÊÜ°µÐÇBµÄÒýÁ¦FA¿ÉµÈЧΪλÓÚOµã´¦ÖÊÁ¿Îªm¡äµÄÐÇÌ壨ÊÓΪÖʵ㣩¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪm1¡¢m2£¬ÊÔÇóm¡ä£¨ÓÃm1¡¢m2±íʾ£©£»
£¨2£©Çó°µÐÇBµÄÖÊÁ¿m2Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1Ö®¼äµÄ¹Øϵʽ£»
£¨3£©ºãÐÇÑÝ»¯µ½Ä©ÆÚ£¬Èç¹ûÆäÖÊÁ¿´óÓÚÌ«ÑôÖÊÁ¿msµÄ2±¶£¬Ëü½«ÓпÉÄܳÉΪºÚ¶´£®Èô¿É¼ûÐÇAµÄËÙÂÊv=2.7¡Á105 m/s£¬ÔËÐÐÖÜÆÚT=4.7¦Ð¡Á104s£¬ÖÊÁ¿m1=6ms£¬ÊÔͨ¹ý¹ÀËãÀ´ÅжϰµÐÇBÓпÉÄÜÊǺڶ´Â𣿣¨G=6.67¡Á10-11N?m2/kg2£¬ms=2.0¡Á1030 kg£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2011?±¦ÛæÇøһģ£©ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ£®ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX-3Ë«ÐÇϵͳ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É£¬Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËüÌìÌåµÄÓ°Ï죬A¡¢BΧÈÆÁ½ÕßµÄÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä£¬ÈçͼËùʾ£¬ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇAµÄËÙÂÊvºÍÔËÐÐÖÜÆÚT£®
£¨1£©¿É¼ûÐÇAËùÊÜ°µÐÇBµÄÒýÁ¦FA¿ÉµÈЧΪλÓÚOµã´¦ÖÊÁ¿Îªm'µÄÐÇÌ壨ÊÓΪÖʵ㣩¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪm1¡¢m2£®ÊÔÇóm¡ä£¨ÓÃm1¡¢m2±íʾ£©
£¨2£©Çó°µÐÇBµÄÖÊÁ¿m2Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1Ö®¼äµÄ¹Øϵʽ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ.ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵ´óÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX-3Ë«ÐÇϵͳ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É£¬Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËûÌìÌåµÄÓ°Ïì.A¡¢BΧÈÆÁ½ÕßÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä£¬Èçͼ5-4-3Ëùʾ.ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇAµÄËÙÂÊvºÍÔËÐÐÖÜÆÚT.

ͼ5-4-3

(1)¿É¼ûÐÇAËùÊÜ°µÐÇBµÄÒýÁ¦Fa¿ÉµÈЧΪλÓÚOµã´¦ÖÊÁ¿Îªm¡äµÄÐÇÌå(ÊÓΪÖʵã)¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪm1¡¢m2£¬ÊÔÇóm¡ä(ÓÃm1¡¢m2±íʾ);

(2)Çó°µÐÇBµÄÖÊÁ¿m2Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1Ö®¼äµÄ¹Øϵʽ£»

(3)ºãÐÇÑÝ»¯µ½Ä©ÆÚ£¬Èç¹ûÆäÖÊÁ¿´óÓÚÌ«ÑôÖÊÁ¿msµÄ2±¶£¬Ëü½«ÓпÉÄܳÉΪºÚ¶´.Èô¿É¼ûÐÇAµÄËÙÂÊv=2.7¡Á105 m/s£¬ÔËÐÐÖÜÆÚT=4.7¦Ð¡Á104 s£¬ÖÊÁ¿m1=6ms£¬ÊÔͨ¹ý¹ÀËãÀ´ÅжϰµÐÇBÓпÉÄÜÊǺڶ´Âð£¿

(G=6.67¡Á10-11N¡¤m2/kg2£¬ms=2.0¡Á1030kg)

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ¡£ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX-3Ë«ÐÇϵͳ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É£¬Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËüÌìÌåµÄÓ°Ï죬A¡¢BΧÈÆÁ½ÕßµÄÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä£¬ÈçͼËùʾ£¬ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇAµÄËÙÂÊvºÍÔËÐÐÖÜÆÚT¡£

£¨1£©¿É¼ûÐÇAËùÊÜ°µÐÇBµÄÒýÁ¦FA¿ÉµÈЧΪλÓÚOµã´¦ÖÊÁ¿Îªm£§µÄÐÇÌ壨ÊÓΪÖʵ㣩¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪm1¡¢m2¡£ÊÔÇóm£§£¨ÓÃm1¡¢m2±íʾ£©

£¨2£©Çó°µÐÇBµÄÖÊÁ¿m2Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1Ö®¼äµÄ¹Øϵʽ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

 ÉñÆæµÄºÚ¶´Êǽü´úÒýÁ¦ÀíÂÛËùÔ¤ÑÔµÄÒ»ÖÖÌØÊâÌìÌ壬̽ѰºÚ¶´µÄ·½°¸Ö®Ò»Êǹ۲âË«ÐÇϵͳµÄÔ˶¯¹æÂÉ£®ÌìÎÄѧ¼Ò¹Û²âºÓÍâÐÇϵ´óÂóÕÜÂ×ÔÆʱ£¬·¢ÏÖÁËLMCX-3Ë«ÐÇϵͳ£¬ËüÓɿɼûÐÇAºÍ²»¿É¼ûµÄ°µÐÇB¹¹³É£®Á½ÐÇÊÓΪÖʵ㣬²»¿¼ÂÇÆäËüÐÇÌåµÄÓ°Ï죬A¡¢BΧÈÆÁ½ÕßÁ¬ÏßÉϵÄOµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ËüÃÇÖ®¼äµÄ¾àÀë±£³Ö²»±ä£¬Èçͼ18Ëùʾ£®ÒýÁ¦³£Á¿ÎªG£¬Óɹ۲âÄܹ»µÃµ½¿É¼ûÐÇAµÄËÙÂÊvºÍÔËÐÐÖÜÆÚT£®

£¨1£©¿É¼ûÐÇAËùÊÜ°µÐÇBµÄÒýÁ¦FA¿ÉµÈЧΪλÓÚOµã´¦ÖÊÁ¿ÎªµÄÐÇÌ壨¿ÉÊÓΪÖʵ㣩¶ÔËüµÄÒýÁ¦£¬ÉèAºÍBµÄÖÊÁ¿·Ö±ðΪm1¡¢m2£¬ÊÔÇó£¨ÓÃm1¡¢m2±íʾ£©£»

£¨2£©Çó°µÐÇBµÄµÄÖÊÁ¿m2Óë¿É¼ûÐÇAµÄËÙÂÊv¡¢ÔËÐÐÖÜÆÚTºÍÖÊÁ¿m1Ö®¼äµÄ¹Øϵʽ£»

£¨3£©ºãÐÇÑÝ»¯µ½Ä©ÆÚ£¬Èç¹ûÆäÖÊÁ¿´óÓÚÌ«ÑôÖÊÁ¿msµÄ2±¶£¬Ëü½«ÓпÉÄܳÉΪºÚ¶´£®Èô¿É¼ûÐÇAµÄËÙÂÊ£¬ÔËÐÐÖÜÆÚ£¬ÖÊÁ¿m1=6ms£¬ÊÔͨ¹ý¹ÀËãÀ´ÅжϰµÐÇBÓпÉÄÜÊǺڶ´Â𣿠  ͼ18

£¨£¬£©                      

 

 

 

 

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸