ÌâÄ¿ÄÚÈÝ
ÖÊÁ¿m1=0.3 kg µÄС³µ¾²Ö¹Ôڹ⻬µÄˮƽÃæÉÏ£¬³µ³¤L=1.5 m,ÏÖÓÐÖÊÁ¿m2=0.2 kg¿ÉÊÓΪÖʵãµÄÎï¿é£¬ÒÔˮƽÏòÓÒµÄËÙ¶Èv0=2 m/s´Ó×ó¶Ë»¬ÉÏС³µ£¬×îºóÔÚ³µÃæÉÏij´¦ÓëС³µ±£³ÖÏà¶Ô¾²Ö¹¡£Îï¿éÓë³µÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý=0.5,È¡g=10 m/s2£¬Çó
£¨1£©Îï¿éÔÚ³µÃæÉÏ»¬ÐеÄʱ¼ät;
£¨2£©ÒªÊ¹Îï¿é²»´ÓС³µÓҶ˻¬³ö£¬Îï¿é»¬ÉÏС³µ×ó¶ËµÄËÙ¶Èv¡ä0²»³¬¹ý¶àÉÙ¡£
£¨1£©ÉèÎï¿éÓëС³µµÄ¹²Í¬ËÙ¶ÈΪv£¬ÒÔˮƽÏòÓÒΪÕý·½Ïò£¬¸ù¾Ý¶¯Á¿Êغ㶨ÂÉÓÐ
¢Ù£¨3·Ö£©
ÉèÎï¿éÓë³µÃæ¼äµÄ»¬¶¯Ä¦²ÁÁ¦ÎªF£¬¶ÔÎï¿éÓ¦Óö¯Á¿¶¨ÀíÓÐ
¢Ú£¨3·Ö£©
ÆäÖÐ ¢Û
½âµÃ
´úÈëÊý¾ÝµÃ ¢Ü£¨1·Ö£©
£¨2£©ÒªÊ¹Îï¿éÇ¡ºÃ²»´Ó³µÏỬ³ö£¬ÐëÎï¿éµ½³µÃæÓÒ¶ËʱÓëС³µÓй²Í¬µÄËÙ¶Èv¡ä£¬Ôò
¢Ý£¨3·Ö£©
Óɹ¦ÄܹØϵÓÐ
¢Þ£¨3·Ö£©
´úÈëÊý¾Ý½âµÃ =5m/s£¨1·Ö£©
¹ÊҪʹÎï¿é²»´ÓС³µÓҶ˻¬³ö£¬Îï¿é»¬ÉÏС³µµÄËÙ¶Èv0¡ä²»Äܳ¬¹ý5m/s¡££¨1·Ö£©