ÌâÄ¿ÄÚÈÝ

ͼ5-3ÊÇÒ»¸ö×Ô¶¯´¢Ë®ÏäµÄʾÒâͼ¡£½á¹¹ÎªÔ²ÖùÐνðÊôˮͰ¡¢Ò»¸öѹÁ¦´«¸Ð¿ª¹ØºÍÒ»¸ö³¤·½Ìå×é³É£¬ÆäÖг¤·½Ìåͨ¹ýϸ¸ËÓëѹÁ¦´«¸Ð¿ª¹ØÏàÁ¬¡£Ñ¹Á¦´«¸Ð¿ª¹ØµÄ×÷ÓÃÊÇ£ºµ±ËüÊܵ½Ï¸¸ËÊúÖ±ÏòϵÄÀ­Á¦´ïµ½10Nʱ±ÕºÏ£¬¿ØÖÆË®±Ã´Ó½øË®¿Ú¿ªÊ¼ÏòͰÄÚעˮ£¬´Ëʱ£¬Ë®Ãæ¸ÕºÃÓ볤·½ÌåµÄϱíÃæÏàÆ½£¬Ë®Í°ÄÚ´¢Ë®¸ß¶ÈΪh1=8cm£»µ±ËüÊܵ½Ï¸¸ËÊúÖ±ÏòϵÄÀ­Á¦µÈÓÚ6Nʱ¶Ï¿ª£¬Ë®±ÃÍ£Ö¹ÏòͰÄÚעˮ£¬´Ëʱ£¬Ë®¸ÕºÃ½þû³¤·½ÌåµÄÉϱíÃæ£¬Ë®Í°ÄÚ´¢Ë®¸ß¶ÈΪh2=40cm¡£ÒÑ֪ˮͰµÄµ×Ãæ»ýΪ0.5m2¡£Çó£º

£¨1£©Ë®±Ã¿ªÊ¼×¢Ë®Ê±£¬Ë®¶ÔˮͰµ×²¿µÄѹǿÊǶàÉÙ£¿

£¨2£©Ë®±ÃÍ£Ö¹ÏòͰÄÚעˮʱ£¬³¤·½ÌåÊܵ½µÄ¸¡Á¦ÊǶàÉÙ£¿

£¨3£©³¤·½ÌåµÄÃܶÈÊǶàÉÙ£¿

£¨1£©¸ù¾Ý¹«Ê½P=¦Ñgh=1.0¡Á103kg/m3¡Á10N/kg¡Á0.08m=800Pa          ¡­¡­1·Ö

          ¸ù¾Ý¹«Ê½¦Ñ=m/VµÃ£¬ m=¦ÑV=1¡Á103kg/m3¡Á0.5m2¡Á0.08m=40kg   ¡­¡­1·Ö

£¨2£©¸ù¾ÝÌâÒ⣬¿ªÊ¼×¢Ë®Ê±£¬³¤·½Ìå¶Ôϸ¸ËÊúÖ±ÏòϵÄÀ­Á¦µÈÓÚËüÔÚ¿ÕÆøÖеÄÖØÁ¦10N£¬Í£Ö¹×¢Ë®Ê±£¬³¤·½Ìå¶Ôϸ¸ËÊúÖ±ÏòϵÄÀ­Á¦µÈÓÚÇÖûÔÚË®ÖÐËùÊܵ½µÄÖØÁ¦6N£¬Òò´Ë£¬Ë®±ÃÍ£Ö¹ÏòͰÄÚעˮʱ£¬³¤·½ÌåÊܵ½µÄ¸¡Á¦ÊÇ£º

 10 N -6 N =4N                                   ¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö

£¨3£©                             ¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö

         ¡­¡­¡­¡­¡­¡­1·Ö

³¤·½ÌåµÄÖÊÁ¿ºÍÌå»ý·Ö±ðΪ

                           ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö

                     

³¤·½ÌåµÄÃܶȠ                       ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­1·Ö

                         ¡­¡­¡­¡­¡­¡­1·Ö

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø