ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿£¨9·Ö£©Ð¡Ã÷̽¾¿¡°Ó°Ï측Á¦´óСµÄÒòËØ¡±µÄʵÑé¹ý³Ì¼°ÓйØÊý¾ÝÈçͼËùʾ£¬ÒÑÖª¦ÑË®=1.0¡Á103kg/m3£¬g=10N/kg£®
£¨1£©Èçͼ¢ÞËùʾʵÑéʱ£¬ÎïÌåÊܵ½µÄ¸¡Á¦Îª________N£®
£¨2£©ÓÉͼ¢Ú¡¢¢Û¡¢¢ÜËùʾʵÑéµÃ³öµÄ½áÂÛÊÇ£ºÔÚÒºÌåÃܶÈÏàͬʱ£¬ÎïÌåËùÊܸ¡Á¦µÄ´óСÓë________Óйأ®
£¨3£©ÓÉͼ______ËùʾʵÑéµÃ³öµÄ½áÂÛÊÇ£ºÎïÌå½þûÔÚÒºÌåÖÐʱ£¬ËùÊܸ¡Á¦µÄ´óСÓëÉî¶ÈÎ޹أ®
£¨4£©Ð¡Ã÷ÓÉͼ¢Û¡¢¢ßËùʾʵÑ飬Ëû¾ÍµÃ³öÎïÌåÊܵ½µÄ¸¡Á¦´óСÓëÒºÌåµÄÃܶÈÓйصĽáÂÛ£®ËûµÄ·ÖÎö¹ý³ÌÊÇ______£¨Ñ¡Ìî¡°ÕýÈ·¡±»ò¡°´íÎó¡±£©µÄ£¬ÄãÅжϵÄÀíÓÉÊÇ___________________£®
£¨5£©ÓÉͼÖÐÌṩµÄÊý¾Ý£¬¿ÉÒÔÇó³öÑÎË®µÄÃܶÈΪ________kg/m3£®
¡¾´ð°¸¡¿£¨1£©0.8 £¨2£©ÅÅ¿ªÒºÌåµÄÌå»ý £¨3£©¢Ü¡¢¢Ý £¨4£©´íÎó ûÓпØÖÆÅÅ¿ªÒºÌåµÄÌå»ýÏàͬ £¨5£©1.125¡Á103
¡¾½âÎö¡¿
ÊÔÌâ·ÖÎö£º£¨1£©´Óͼ1ÖªÎïÌåµÄÖØÁ¦ÎªG=5N£¬Í¼5Öª£¬ÎïÌåÍêÈ«½þûÔÚË®ÖÐʱ£¬Êܵ½µÄÀÁ¦ÎªF=4.2N£¬ÎïÌåÊܵ½µÄ¸¡Á¦ÎªF¸¡=G-FÀ=5N-4.2N=0.8N£®
£¨2£©ÓÉͼ¢Ú¡¢¢Û¡¢¢ÜËùʾʵÑéµÃ³öµÄ½áÂÛÊÇ£ºÔÚÒºÌåÃܶÈÏàͬʱ£¬ÎïÌåËùÊܸ¡Á¦µÄ´óСÓëÅÅ¿ªÒºÌåµÄÌå»ýÓйأ¬ÅÅ¿ªÒºÌåµÄÌå»ýÔ½´ó£¬Êܵ½µÄÀÁ¦Ô½Ð¡£¬¸¡Á¦Ô½´ó£®
£¨3£©ÓÉͼ¢Ü¡¢¢ÝËùʾʵÑ飬ÎïÌ嶼ÊÇÍêÈ«½þû£¬µ«½þûµÄÉî¶È²»Í¬£¬Òò´ËµÃ³öµÄ½áÂÛÊÇ£ºÎïÌå½þûÔÚÒºÌåÖÐʱ£¬ËùÊܸ¡Á¦µÄ´óСÓëÉî¶ÈÎ޹أ®
£¨4£©Ð¡Ã÷ÓÉͼ¢Û¡¢¢ßËùʾʵÑ飬Ëû¾ÍµÃ³öÎïÌåÊܵ½µÄ¸¡Á¦´óСÓëÒºÌåµÄÃܶÈÓйصĽáÂÛ£®ËûµÄ·ÖÎö¹ý³ÌÊÇ´íÎó£¬ÔÚ̽¾¿¸¡Á¦´óСÓëÒºÌåÃܶȵĹØϵʱ£¬Ó¦¸Ã¿ØÖÆÎïÌåÅÅ¿ªÒºÌåµÄÌå»ýÏàͬ£¬´ÓͼÏñ¿´³ö£¬ÎïÌåÅÅ¿ªµÄÒºÌåµÄÌå»ý²»Í¬µÄ¡£
£¨5£©ÓÉ£¨1£©ÖУ¬ÎïÌåÔÚË®ÖÐÊܵ½µÄ¸¡Á¦Îª0.8N£¬ÖªµÀÎïÌåµÄÌå»ý£¬
ÓÉͼ7Çó³ö£¬ÎïÌåÔÚÑÎË®ÖÐÊܵ½µÄ¸¡Á¦
F¸¡¡¯=5.0N-4.1N=0.9N£¬Çó³öÑÎË®µÄÃܶÈΪ£®