ÌâÄ¿ÄÚÈÝ
ÔÚÓÃÂäÌå·¨ÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑéÖУº
( 1 )ËùÓÃÖØ´¸µÄÖÊÁ¿m=1.0kg,´òµã¼ÆʱÆ÷ËùÓõçԴƵÂÊ50Hz£¬´òϵÄÖ½´øÈçÓÒͼËùʾ(ͼÖеÄÊý¾ÝΪ´ÓÆðʼµãOµ½¸ÃµãµÄ¾àÀë)£¬Ôò ÔÚ´òBµãʱ£¬ÖØ´¸µÄËÙ¶È=_____________m/s,ÖØ´¸µÄ¶¯ÄÜ=___________J£¬´Ó¿ªÊ¼ÏÂÂäµ½´òBµãʱ£¬ÖØ´¸µÄÊÆÄܼõСÁ¿=_________J(È¡Á½Î»ÓÐЧÊý×Ö)£®
( 2 )¸ù¾ÝÖ½´øËã³ö¸÷µãµÄËÙ¶È,Á¿³öÏÂÂä¾àÀëh£¬ÔòÒÔΪ×ÝÖᣬÒÔhΪºáÖᣬ»³öµÄͼÏßÓ¦ÊÇÏÂͼËùʾÖеÄÄĸö£¨ £©
£¨3£©¸ù¾ÝʵÑéËùµÃÊý¾ÝºÍ¿ÉÒԵõ½µÄ½áÂÛÊÇ£º ¡£
(1)0.79,0.31,0.32 (2)C £¨3£©ÔÚʵÑéÎó²îÔÊÐí·¶Î§ÄÚ»úеÄÜÊغã
½âÎö
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿