ÌâÄ¿ÄÚÈÝ

£¨2010?ºÚÁú½­Ä£Ä⣩£¨°´ÌâÄ¿ÒªÇó×÷´ð£¬Ð´³ö±ØÒªµÄÎÄ×Ö˵Ã÷¡¢·½³ÌʽºÍÖØÒªÑÝËã²½Ö裮ֻд³ö×îºó´ð°¸²»µÃ·Ö£©
ÈçͼËùʾ£¬ÖÊÁ¿ÎªmµÄÎïÌå´ÓAµã¾²Ö¹¿ªÊ¼Ñذ뾶ΪRµÄËÄ·ÖÖ®Ò»¹â»¬Ô²»¡µÀÏ»¬£¬AÓëÔ²ÐÄOÔÚͬһˮƽÏßÉÏ£¬µ½´ïÔ²»¡×îµÍµãBʱˮƽÅ׳ö£¬Å׳öµãµ½´ïÂäµØµãµÄÊúÖ±¸ß¶ÈΪh£¬²»¼ÆÒ»ÇÐ×èÁ¦£¬ÖØÁ¦¼ÓËÙ¶ÈΪg£®
Ç󣺣¨1£©ÎïÌå´ÓBµãÅ׳öʱµÄËٶȴóС£®
    £¨2£©ÎïÌåÔÚBµãÊܵ½µÄÖ§³ÖÁ¦µÄ´óС£®
    £¨3£©ÎïÌåÂäµØµãÓëÅ׳öµãµÄˮƽ¾àÀ룮
·ÖÎö£º£¨1£©ÎïÌå´ÓAµã»¬µ½Bµã¹ý³ÌÖУ¬¹ìµÀµÄÖ§³ÖÁ¦²»×ö¹¦£¬»úеÄÜÊغ㣬ÓÉ»úеÄÜÊغ㶨ÂÉÇóBµãµÄËٶȣ®
£¨2£©ÎïÌåÔÚBµãʱÊܵ½¹ìµÀµÄÖ§³ÖÁ¦ºÍÖØÁ¦£¬ÓÉÕâÁ½¸öÁ¦µÄºÏÁ¦ÌṩÏòÐÄÁ¦£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÁÐʽÇóÖ§³ÖÁ¦£®
£¨3£©ÎïÌåÀ뿪Bµãºó×öƽÅ×Ô˶¯£¬ÓÉƽÅ×Ô˶¯µÄ¹æÂÉÇóˮƽ¾àÀ룮
½â´ð£º½â£º£¨1£©ÎïÌå´ÓAµã»¬µ½Bµã¹ý³ÌÖУ¬ÓÉ»úеÄÜÊغãµÃ
  mgR=
1
2
m
v
2
B

½âµÃ£¬vB=
2gR

£¨2£©ÎïÌå¾­¹ýBµãʱ£ºF-mg=m
v
2
B
R

µÃ F=mg+2mg=3mg  
£¨3£©ÎïÌåÀ뿪Bºó£®×÷ƽÅ×Ô˶¯
Ôòh=
1
2
gt2

  x=vBt
ËùÒÔÁªÁ¢µÃx=2
hR

´ð£º
£¨1£©ÎïÌå´ÓBµãÅ׳öʱµÄËٶȴóСÊÇ
2gR
£®
£¨2£©ÎïÌåÔÚBµãÊܵ½µÄÖ§³ÖÁ¦µÄ´óСÊÇ3mg£®
£¨3£©ÎïÌåÂäµØµãÓëÅ׳öµãµÄˮƽ¾àÀëÊÇ2
hR
£®
µãÆÀ£º±¾ÌâÊÇ»úеÄÜÊغ㶨ÂÉ¡¢Å£¶ÙµÚ¶þ¶¨ÂɺÍƽÅ×Ô˶¯µÄ×ۺϣ¬Òª×¥×¡¸÷¸ö¹ý³ÌËÙ¶ÈÖ®¼äµÄ¹Øϵ£¬»ù´¡Ì⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø