![](http://thumb.1010pic.com/pic3/upload/images/201309/88/351430f7.png)
£¨2011?Т¸ÐÄ£Ä⣩ijÑо¿ÐÔѧϰС×éÓÃÈçͼ£¨a£©ËùʾװÖÃÑéÖ¤»úеÄÜÊغ㶨ÂÉ£®Èçͼ£¨a£©ÖУ¬ÐüµãÕýÏ·½Pµã´¦·ÅÓÐˮƽ·ÅÖóãÈȵĵçÈÈË¿£¬µ±ÐüÏß°ÚÖÁµçÈÈË¿´¦Ê±ÄÜÇáÒ×±»Éնϣ¬Ð¡ÇòÓÉÓÚ¹ßÐÔÏòÇ°·É³ö×÷ƽÅ×Ô˶¯£®ÔÚµØÃæÉÏ·ÅÉÏ°×Ö½£¬ÉÏÃ渲¸Çן´Ð´Ö½£¬µ±Ð¡ÇòÂäÔÚ¸´Ð´Ö½ÉÏʱ£¬»áÔÚÏÂÃæ°×Ö½ÉÏÁôϺۼ££®ÓÃÖØ´¸ÏßÈ·¶¨³öA¡¢BµãµÄͶӰµãN¡¢M£®ÓÃÃ׳ßÁ¿³öANµÄ¸ß¶Èh
1¡¢BMµÄ¸ß¶Èh
2£¬Ëã³öA¡¢BÁ½µãµÄÊúÖ±¾àÀ룬ÔÙÁ¿³öM¡¢CÖ®¼äµÄ¾àÀës£¬¼´¿ÉÑéÖ¤»úеÄÜÊغ㶨ÂÉ£®ÒÑÖªÖØÁ¦¼ÓËÙ¶ÈΪg£¬Ð¡ÇòµÄÖÊÁ¿Îªm£®
£¨1£©ÓÃÌâÖÐËù¸ø×Öĸ±íʾ³öСÇòƽÅ×ʱµÄ³õËÙ¶Èv
0=
£®
£¨2£©Óòâ³öµÄÎïÀíÁ¿±íʾ³öСÇò´ÓAµ½B¹ý³ÌÖУ¬ÖØÁ¦ÊÆÄܵļõÉÙÁ¿¡÷E
P=
mg£¨h1-h2£©
mg£¨h1-h2£©
£¬¶¯ÄܵÄÔö¼ÓÁ¿¡÷E
K=
£®