ÌâÄ¿ÄÚÈÝ
СÃ÷Òª²âÁ¿Ä³¿óʯµÄÃܶȣ®Æ÷²ÄÓУº¿óʯ¿é¡¢Ììƽ£¨º¬íÀÂ룩¡¢ÉÕ±¡¢ÊÊÁ¿µÄË®¡¢Ï¸Ïߣ®²âÁ¿¹ý³ÌÈçÏ£º
£¨1£©µ÷½ÚÌìƽƽºâʱ£¬·¢ÏÖÖ¸ÕëÆ«Ïò·Ö¶ÈÅ̵ÄÓҲ࣬Èçͼ¼×Ëùʾ£¬´ËʱӦ½«Æ½ºâÂÝĸÏò________________ µ÷£®
£¨2£©Ììƽƽºâºó£¬Ð¡Ã÷¿ªÊ¼²âÁ¿¿óʯ¿éµÄÖÊÁ¿£®ÇëÖ¸³öͼÒÒÖÐСÃ÷µÄ´íÎó²Ù×÷________________ £®ÕýÈ·²Ù×÷ºó£¬Æ½Ê±·ÅÔÚÅÌÖеÄíÀÂëºÍÓÎÂëÔÚ±ê³ßÉϵÄλÖÃÈçͼ±ûËùʾ£¬Ôò¿óʯ¿éµÄÖÊÁ¿Îª________________ g£®
£¨3£©½Ó×ÅСÃ÷ÔÚÉÕ±Öе¹ÈëÊÊÁ¿µÄË®£¬³Æ³öÉÕ±ºÍË®µÄ×ÜÖÊÁ¿m1£»Èçͼ¶¡Ëùʾ£¬ÊÖÌáϸÏßʹ¿óʯ¿é½þûÔÚË®Öв¢±£³Ö¾²Ö¹£¨Ë®ÎÞÒç³öÇÒ¿óʯ¿é²»½Ó´¥ÉÕ±£©£®Ììƽƽºâºó£¬íÀÂëÓëÓÎÂëµÄ×ÜʾÊýΪm2£»Ôò¿óʯÃܶȵıí´ïʽ£º¦Ñ="_____" £¨ÓÃm0¡¢m1¡¢m2¡¢¦ÑË® À´±íʾ£©£®
£¨1£©µ÷½ÚÌìƽƽºâʱ£¬·¢ÏÖÖ¸ÕëÆ«Ïò·Ö¶ÈÅ̵ÄÓҲ࣬Èçͼ¼×Ëùʾ£¬´ËʱӦ½«Æ½ºâÂÝĸÏò________________ µ÷£®
£¨2£©Ììƽƽºâºó£¬Ð¡Ã÷¿ªÊ¼²âÁ¿¿óʯ¿éµÄÖÊÁ¿£®ÇëÖ¸³öͼÒÒÖÐСÃ÷µÄ´íÎó²Ù×÷________________ £®ÕýÈ·²Ù×÷ºó£¬Æ½Ê±·ÅÔÚÅÌÖеÄíÀÂëºÍÓÎÂëÔÚ±ê³ßÉϵÄλÖÃÈçͼ±ûËùʾ£¬Ôò¿óʯ¿éµÄÖÊÁ¿Îª________________ g£®
£¨3£©½Ó×ÅСÃ÷ÔÚÉÕ±Öе¹ÈëÊÊÁ¿µÄË®£¬³Æ³öÉÕ±ºÍË®µÄ×ÜÖÊÁ¿m1£»Èçͼ¶¡Ëùʾ£¬ÊÖÌáϸÏßʹ¿óʯ¿é½þûÔÚË®Öв¢±£³Ö¾²Ö¹£¨Ë®ÎÞÒç³öÇÒ¿óʯ¿é²»½Ó´¥ÉÕ±£©£®Ììƽƽºâºó£¬íÀÂëÓëÓÎÂëµÄ×ÜʾÊýΪm2£»Ôò¿óʯÃܶȵıí´ïʽ£º¦Ñ="_____" £¨ÓÃm0¡¢m1¡¢m2¡¢¦ÑË® À´±íʾ£©£®
£¨1£©×ó
£¨2£©ÓÃÊÖÖ±½ÓÄÃÈ¡íÀÂë 39.4
£¨3£©
£¨1£©Í¼ÖÐÏÔʾָÕëÏò×óÆ«£¬¸ù¾Ý¡°ÓÒÆ«×óµ÷£¬×óÆ«ÓÒµ÷¡±µÄ¹æÔò£¬Ó¦½«Æ½ºâÂÝĸÏò×óµ÷£®
£¨2£©ÔÚ³ÆÁ¿¹ý³ÌÖУ¬Ð¡Ã÷ÓÃÊÖÄÃíÀÂëÁË£¬ÕâÑù»áʹíÀÂëÉúÐ⣻¿óʯ¿éµÄÖÊÁ¿m0=20g+10g+5g+4.4g=39.4g
£¨3£©±¾ÌâÇó½âÁ½¸öÎÊÌ⣺¢Ù½«¿óʯ½þûÔÚË®Öкó£¬Ììƽƽºâ£¬×ó±ßÍÐÅÌÊܵ½µÄѹÁ¦Îª£ºF×ó=m1g+G¿óʯ-FÀ£¬ÓÒ±ßÍÐÅÌÊܵ½µÄѹÁ¦FÓÒ=m2g£¬¸ù¾ÝF×ó=FÓÒÇó³ö¸¡Á¦´óС£»
¢Ú¸ù¾Ý°¢»ùÃ×µÂÔÀíF¸¡=¦ÑË®gVÅÅ£¬Çó³öVÅÅ£¬¶øÎïÌå½þûˮÖÐʱÌå»ýV=VÅÅ£¬Óù«Ê½¼ÆËã³ö¿óʯµÄÃܶȣ®
¢ÙʵÐÄÎïÌå½þûˮÖÐÖØÐÂƽºâºó£¬¸ù¾ÝF×ó=FÓÒ£¬¼´£ºm1g+GÇò-FÀ=m2g£¬
µÃ£ºF¸¡=G-FÀ=£¨m2-m1£©g£»
¢Ú¸ù¾Ý°¢»ùÃ×µÂÔÀí£¬ÎïÌåµÄÌå»ýV=VÅÅ=£¬ËùÒÔÎïÌåµÄÃܶÈ
¹Ê´ð°¸Îª£º£¨1£©×󣻣¨2£©ÓÃÊÖÖ±½ÓÄÃÈ¡íÀÂ룻39.4£»£¨3£©£®
£¨2£©ÔÚ³ÆÁ¿¹ý³ÌÖУ¬Ð¡Ã÷ÓÃÊÖÄÃíÀÂëÁË£¬ÕâÑù»áʹíÀÂëÉúÐ⣻¿óʯ¿éµÄÖÊÁ¿m0=20g+10g+5g+4.4g=39.4g
£¨3£©±¾ÌâÇó½âÁ½¸öÎÊÌ⣺¢Ù½«¿óʯ½þûÔÚË®Öкó£¬Ììƽƽºâ£¬×ó±ßÍÐÅÌÊܵ½µÄѹÁ¦Îª£ºF×ó=m1g+G¿óʯ-FÀ£¬ÓÒ±ßÍÐÅÌÊܵ½µÄѹÁ¦FÓÒ=m2g£¬¸ù¾ÝF×ó=FÓÒÇó³ö¸¡Á¦´óС£»
¢Ú¸ù¾Ý°¢»ùÃ×µÂÔÀíF¸¡=¦ÑË®gVÅÅ£¬Çó³öVÅÅ£¬¶øÎïÌå½þûˮÖÐʱÌå»ýV=VÅÅ£¬Óù«Ê½¼ÆËã³ö¿óʯµÄÃܶȣ®
¢ÙʵÐÄÎïÌå½þûˮÖÐÖØÐÂƽºâºó£¬¸ù¾ÝF×ó=FÓÒ£¬¼´£ºm1g+GÇò-FÀ=m2g£¬
µÃ£ºF¸¡=G-FÀ=£¨m2-m1£©g£»
¢Ú¸ù¾Ý°¢»ùÃ×µÂÔÀí£¬ÎïÌåµÄÌå»ýV=VÅÅ=£¬ËùÒÔÎïÌåµÄÃܶÈ
¹Ê´ð°¸Îª£º£¨1£©×󣻣¨2£©ÓÃÊÖÖ±½ÓÄÃÈ¡íÀÂ룻39.4£»£¨3£©£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿