ÌâÄ¿ÄÚÈÝ
ÎÒ¹ú½«ÓÚ2022Äê¾Ù°ì¶¬°Â»á£¬ÌøÌ¨»¬Ñ©ÊÇÆäÖÐ×î¾ß¹ÛÉÍÐÔµÄÏîĿ֮һ£¬ÈçͼËùʾ£¬ÖÊÁ¿m=60kgµÄÔ˶¯Ô±´Ó³¤Ö±Öú»¬µÀÄ©¶ËABµÄA´¦Óɾ²Ö¹¿ªÊ¼ÒÔ¼ÓËÙ¶È
ÔȼÓËÙ»¬Ï£¬µ½´ïÖú»¬µÀÄ©¶ËBʱËÙ¶È
£¬AÓëBµÄÊúÖ±¸ß¶È²îH=48m£¬ÎªÁ˸ıäÔ˶¯Ô±µÄÔ˶¯·½Ïò£¬ÔÚÖú»¬µÀÓëÆðÌøÌ¨Ö®¼äÓÃÒ»¶ÎÍäÇú»¬µÀÏνӣ¬ÆäÖÐ×îµÍµãC´¦¸½½üÊÇÒ»¶ÎÒÔOΪԲÐĵÄÔ²»¡¡£Öú»¬µÀÄ©¶ËBÓ뻬µÀ×îµÍµãCµÄ¸ß¶È²îh=5m£¬Ô˶¯Ô±ÔÚB¡¢C¼äÔ˶¯Ê±×èÁ¦×ö¹¦W=-1530J£¬È¡![]()
![]()
£¨1£©ÇóÔ˶¯Ô±ÔÚAB¶ÎÏ»¬Ê±Êܵ½×èÁ¦
µÄ´óС£»
£¨2£©ÈôÔ˶¯Ô±Äܹ»³ÐÊܵÄ×î´óѹÁ¦ÎªÆäËùÊÜÖØÁ¦µÄ6±¶£¬ÔòCµãËùÔÚÔ²»¡µÄ°ë¾¶RÖÁÉÙӦΪ¶à´ó¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿