ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬ÔÚÇã½ÇΪµÄ¹â»¬Ð±ÃæÄ©¶Ë¹Ì¶¨×ÅÒ»¸ö×ã¹»³¤µÄµ¼ÈÈÆû¸×£¬Æû¸×ÀïÓûîÈû·â±Õ×ÅÒ»¶¨ÖÊÁ¿µÄÀíÏëÆøÌ壬»îÈûµÄÖÊÁ¿Îªm£¬ºá½ØÃæ»ýΪS£¬»îÈûµ½¸×µ×µÄ¾àÀëΪd£¬ÏÖ°ÑÒ»¸ö´øÓÐÇá¸ËµÄÎïÌå·ÅÔÚбÃæÉÏ£¬Çá¸ËÓëбÃæƽÐУ¬Çá¸Ë϶˷ÅÔÚ»îÈûÉÏ¡£ÒÑÖªÎïÌåÖÊÁ¿ÎªM£¬´óÆøѹǿΪP0£®ÖØÁ¦¼ÓËÙ¶ÈΪg£¬»îÈûÔÚÔ˶¯¹ý³ÌÖÐËùÊܵÄĦ²ÁÁ¦¿ÉÒÔºöÂÔ²»¼Æ£¬»·¾³Î¶ȱ£³Ö²»±ä£¬Çó£º
¢Ù¸ÕÊÍ·ÅÎïÌåµÄ˲¼ä£¬ÎïÌåµÄ¼ÓËٶȴóС£»
¢ÚÎȶ¨ºó£¬»îÈûµ½Æû¸×µ×ÃæµÄ¾àÀë¡£
¡¾´ð°¸¡¿¢Ù¢Ú
¡¾½âÎö¡¿¢Ù¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬ÎïÌåÊͷŵÄ˲¼ä£¬ÓÐ
Mgsin=(M+m)a .
½âµÃ¼ÓËÙ¶Èa=
¢Ú×îÖÕ»îÈûÍ£Ö¹Ô˶¯,¸ù¾ÝÁ¦µÄƽºâÌõ¼þÓÐ
(m+M)gsin+p0S-p2S=0 .
ÆøÌåζȲ»±ä£¬¸ù¾Ý²£Òâ¶ú¶¨ÂÉÓÐ
p1dS=p2d'S£¬
ÆäÖÐp1S=mgsin+p0S
ÁªÁ¢½âµÃ»îÈûµ½Æû¸×µ×µÄ¾àÀë
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿