ÌâÄ¿ÄÚÈÝ
Á½¶Ë¿ª¿Ú¡¢ÄÚ±íÃæ¹â»¬µÄUÐιܴ¦ÓÚÊúֱƽÃæÄÚ£¬ÈçͼËùʾ£¬ÖÊÁ¿¾ùΪm="10" kgµÄ»îÈûA¡¢BÔÚÍâÁ¦×÷ÓÃϾ²Ö¹ÓÚ×óÓÒ¹ÜÖÐͬһ¸ß¶ÈA´¦£¬½«¹ÜÄÚ¿ÕÆø·â±Õ£¬´Ëʱ¹ÜÄÚÍâ¿ÕÆøµÄѹǿ¾ùΪp0=1.0¡Á105 Pa×ó¹ÜºÍˮƽ¹Üºá½ØÃæ»ýS1="10" cm2,Óҹܺá½ØÃæ»ýS2="20" cm2£¬Ë®Æ½¹Ü³¤Îª3h¡£ÏÖ³·È¥ÍâÁ¦ÈûîÈûÔÚ¹ÜÖÐϽµ£¬ÇóÁ½»îÈûÎȶ¨ºóËù´¦µÄ¸ß¶È¡££¨»îÈûºñ¶È¾ù´óÓÚˮƽ¹ÜÖ±¾¶£¬¹ÜÄÚÆøÌå³õĩ״̬ζÈÏàͬ£¬gÈ¡10 m/s2)
×ó²à½µÖÁˮƽ¹Ü¿Ú£»ÓҲཱུÖÁ¸ßΪ0.5h´¦
ÊÔÌâ·ÖÎö£º³·È¥ÍâÁ¦ºó×ó²àÏòϵÄѹǿ£º
ÓÒ²àÏòϵÄѹǿ£º
¹Ê»îÈû¾ùϽµ£¬ÇÒ×ó²à½µÖÁˮƽ¹Ü¿Ú¡£
ÉèÓҲཱུÖÁ¸ßΪx´¦£¬´Ëʱ·â±ÕÆøÌåѹǿ±äΪ£ºp¡ä£½1.5p0
¶Ô·â±ÕÆøÌ壺p0(4hS1£«hS2)£½1.5p0(3hS1£«xS2)£¬
½âµÃ£ºx£½0.5h¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿