ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾÊÇ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÁ¦¡¢ÖÊÁ¿µÄ¹Øϵ¡±ÊµÑé×°Öãº
(1)ÏÂͼÊÇʵÑéʱƽºâ×èÁ¦µÄÇéÐΣ¬ÆäÖÐÕýÈ·µÄÊÇ________(Ñ¡Ìî×Öĸ)
(2)ÔÚƽºâ×èÁ¦ºó£¬µ±Ð¡³µ×ÜÖÊÁ¿________(Ìî¡°Ô¶´óÓÚ¡±¡¢¡°Ô¶Ð¡ÓÚ¡±»ò¡°½üËƵÈÓÚ¡±)СÅ̼°ÅÌÄÚÎïÌåµÄ×ÜÖÊÁ¿Ê±£¬Ð¡Å̼°ÅÌÄÚÎïÌåµÄ×ÜÖØÁ¦´óС½üËƵÈÓÚС³µÔ˶¯Ê±ËùÊܵÄÀÁ¦´óС¡£ÊµÑéʱ¿Éͨ¹ýÔö¼õСÅÌÖÐ____________(Ñ¡Ìî¡°50g¹³Â롱»ò¡°1gíÀÂ롱)µÄ¸öÊýÀ´¸Ä±äÀÁ¦µÄ´óС¡£
¡¾´ð°¸¡¿ C Ô¶´óÓÚ 1gíÀÂë
¡¾½âÎö¡¿£¨1£©Æ½ºâĦ²ÁÁ¦Ê±£¬²»¹ÒÍÐÅ̺͹³Â룬½«²»´ø»¬ÂÖµÄÒ»¶ËµæÆð£¬Ê¹Ð¡³µËùÊÜÖØÁ¦ÑØбÃæÏòϵķÖÁ¦ÓëС³µÊܵ½µÄĦ²ÁÁ¦Æ½ºâ£¬¹ÊCÕýÈ·£¬AB´íÎó¡£
£¨2£©ÉèÉþ×ÓÉÏÀÁ¦ÎªF£¬¶ÔС³µ¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÓУºF=Ma £¬¶ÔСÅ̼°ÅÌÄÚÎïÌåÓУºmg-F=ma £¬ÁªÁ¢½âµÃ£º £¬ÓÉ´Ë¿ÉÖªµ±Ð¡³µ×ÜÖÊÁ¿MÔ¶´óÓÚСÅ̼°ÅÌÄÚÎïÌåmʱ£¬Éþ¶ÔС³µµÄÀÁ¦´óСµÈÓÚСÅ̼°ÅÌÄÚÎïÌåµÄÖØÁ¦¡£ÓÉÉÏ¿ÉÖªÑéʱ¿Éͨ¹ýÔö¼õСÅÌÖÐ1gíÀÂëµÄ¸öÊýÀ´¸Ä±äÀÁ¦µÄ´óС¡£