Question

ÈçͼËùʾ£¬Á½¸öͬÐÄÔ²ÊǴų¡µÄÀíÏë±ß½ç£¬ÄÚÔ²°ë¾¶ÎªR£¬ÍâÔ²°ë¾¶ÎªR£¬´Å³¡·½Ïò´¹Ö±ÓÚÖ½ÃæÏòÀÄÚÍâÔ²Ö®¼ä»·ÐÎÇøÓò´Å¸ÐӦǿ¶ÈΪB£¬ÄÚÔ²µÄ´Å¸ÐӦǿ¶ÈΪB/3¡£t=0ʱһ¸öÖÊÁ¿Îªm£¬´ø£­qµçÁ¿µÄÀë×Ó£¨²»¼ÆÖØÁ¦£©£¬´ÓÄÚÔ²ÉϵÄAµãÑذ뾶·½Ïò·É½ø»·Ðδų¡£¬¸ÕºÃûÓзɳö´Å³¡¡£

£¨1£©ÇóÀë×ÓËٶȴóС
£¨2£©Àë×Ó×ÔAµãÉä³öºóÔÚÁ½¸ö´Å³¡²»¶ÏµØ·É½ø·É³ö£¬´Ót=0¿ªÊ¼¾­¶à³¤Ê±¼äµÚÒ»´Î»Øµ½Aµã£¿
£¨3£©´Ót=0¿ªÊ¼µ½Àë×ÓµÚ¶þ´Î»Øµ½Aµã£¬Àë×ÓÔÚÄÚÔ²´Å³¡ÖÐÔ˶¯µÄʱ¼ä¹²Îª¶àÉÙ£¿
£¨4£©»­³ö´Ót=0µ½µÚ¶þ´Î»Øµ½AµãÀë×ÓÔ˶¯µÄ¹ì¼£¡££¨Ð¡Ô²ÉϵĺڵãΪԲÖܵĵȷֵ㣬¹©»­Í¼Ê±²Î¿¼£©

Answer 1

¢Ù¡¢ÒÀÌâÒâÔÚÍâ´Å³¡¹ì¼£ÓëÍâÔ²ÏàÇУ¬Èçͼ
ÓÉÅ£¶ÙµÚ¶þ¶¨ÂÉ£ºmv²/r₁=qvB¡­¡­¡­¡­¡­¡­2·Ö
ÓÉͼÖм¸ºÎ¹ØϵµÃ£º
µÃ£º       ¡­¡­2·Ö
ÓÉÒÔÉϸ÷ʽµÃ£º  ¡­¡­2·Ö
¢Ú¡¢Àë×Ó´ÓA³ö·¢¾­C¡¢DµÚÒ»´Î»Øµ½A¹ì¼£Èçͼ£¬ÔÚÄÚÔ²µÄ´Å³¡ÇøÓò£ºmv²/r₂="qvB/3"
¿ÉµÃ£º   ¡­¡­¡­¡­¡­1·Ö
ÖÜÆÚ£º     ¡­¡­¡­¡­¡­1·Ö
Óɼ¸ºÎ¹Øϵ¿ÉÖª£º¦Â=¦Ð/6
ÔÚÍâ´Å³¡ÇøÓòµÄÖÜÆÚ£º                   ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö
Óɼ¸ºÎ¹Øϵ¿ÉÖª£º¦Á=4¦Ð/3
Àë×ÓA¡úC¡úD¡úAµÄʱ¼ä£º        ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö
                                  ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö
¢Û¡¢´Ót=0¿ªÊ¼µ½Àë×ÓµÚ¶þ´Î»Øµ½Aµã£¬Àë×ÓÔÚÄÚÔ²´Å³¡Öй²Ô˶¯6´Î£¬Ê±¼äΪt₂£º
    ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö
µÃ£º      ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö
¢Ü¡¢¹ì¼£Èçͼ               ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­3·Ö

½âÎö