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ÈçͼËùʾ,¹â»¬¾øԵˮƽ̨¾àˮƽµØÃæ¸ßh="0.80" m,µØÃæÓëÊúÖ±¾øÔµ¹â»¬Ô²ÐιìµÀÔÚAµãÁ¬½Ó,Aµã¾àÊúֱǽ±Ús="0.60" m,Õû¸ö×°ÖÃλÓÚˮƽÏòÓÒµÄÔÈÇ¿µç³¡ÖÐ.ÏÖ½«ÖÊÁ¿Îªm="0.1" kg¡¢µçºÉÁ¿Îªq=1¡Á10-3 CµÄ´øÕýµçºÉµÄСÇò(¿ÉÊÓΪÖʵã),´Óƽ̨ÉϵĶ˵ãNÓɾ²Ö¹ÊÍ·Å,À뿪ƽ̨NµãºóÇ¡ºÃÇÐÈë°ë¾¶ÎªR="0.4" mµÄ¾øÔµ¹â»¬Ô²ÐιìµÀ,²¢ÑØÔ²ÐιìµÀÔ˶¯µ½PµãÉä³ö.ͼÖÐOµãÊÇÔ²¹ìµÀµÄÔ²ÐÄ,B¡¢C·Ö±ðÊÇÔ²ÐιìµÀµÄ×îµÍµãºÍ×î¸ßµã,AOÓëBOÖ®¼ä¼Ð½ÇΪ53¡ã,È¡g=10 m/s2,sin37¡ã=0.6,cos37¡ã=0.8,Çó:
(1)µç³¡Ç¿¶ÈEµÄ´óС;
(2)Ô˶¯¹ý³ÌÖÐ,СÇòµÄ×î´óËÙ¶È(½á¹û¿ÉÒÔ±£Áô¸ùºÅ);
(3)СÇò¶Ô¹ìµÀµÄ×îСѹÁ¦.
(1) 750 N/C(2) 5.92 m/s. (3) 2.5 N
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