ijʵÑéС×éÏë²âÁ¿Ä¾°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦£®×°ÖÃÈçͼ£¬Ò»Ä¾¿é·ÅÔÚ´Ö²ÚµÄˮƽ³¤Ä¾°åÉÏ£¬ÓÒ²à˨ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓëÖØÎïÁ¬½Ó£¬Ä¾¿é×ó²àÓë´©¹ý´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬³¤Ä¾°å¹Ì¶¨ÔÚˮƽʵÑę́ÉÏ£®ÊµÑéʱ£¬Ä¾¿éÔÚÖØÎïÇ£ÒýÏÂÏòÓÒÔ˶¯£¬ÖØÎïÂäµØºó£¬Ä¾¿é¼ÌÐøÏòÓÒ×öÔȼõËÙÔ˶¯£¬ÏÂͼ¸ø³öÁËÖØÎïÂäµØºó´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬ÏµÁÐСºÚµãÊǼÆÊýµã£¬Ã¿ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµã£¨Í¼ÖÐδ±ê³ö £©£¬¼ÆÊýµã¼äµÄ¾àÀëÈçͼËùʾ£®´òµã¼ÆʱÆ÷ËùÓý»Á÷µçƵÂÊΪ50Hz£¬²»¼ÆÖ½´øÓëľ¿é¼äµÄÀ­Á¦£®

    

 

£¨1£©¿ÉÒÔÅжÏÖ½´øµÄ       £¨×ó»òÓҶˣ©Óëľ¿éÁ¬½Ó£®¸ù¾ÝÖ½´øÌṩµÄÊý¾Ý¼ÆËã´òµã¼ÆʱÆ÷ÔÚ´òÏÂAµãºÍBµãʱľ¿éµÄËÙ¶ÈvA £½ ___________m/s£¬vB£½  ___________ m/s£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

   £¨2£©Òª²âÁ¿ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦WAB£¬»¹ÐèÒªµÄʵÑéÆ÷²ÄÊÇ      £¬»¹Ó¦²âÁ¿µÄÎïÀíÁ¿ÊÇ        £®£¨ÌîÈëËùѡʵÑéÆ÷²ÄºÍÎïÀíÁ¿Ç°µÄ×Öĸ£©

         A£®Ä¾°åµÄ³¤¶Èl                 B£®Ä¾¿éµÄÖÊÁ¿m1                

         C£®Ä¾°åµÄÖÊÁ¿m2                D£®ÖØÎïÖÊÁ¿m3       

         E£®Ä¾¿éÔ˶¯µÄʱ¼ät              F£®AB¶ÎµÄ¾àÀëlAB

         G£®Ììƽ                        H£®Ãë±í                 

         J£®µ¯»É³Ó

   £¨3£©ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦µÄ¹ØϵʽWAB=                     £®

£¨ÓÃvA ¡¢vBºÍµÚ£¨2£©ÎÊÖвâµÃµÄÎïÀíÁ¿µÄ×Öĸ±íʾ£©

 

 

¡¾´ð°¸¡¿

£¨1£©ÓҶˣ¨2·Ö£©£¬vA £½0£®72 m/s£¨2·Ö£©£¬vB£½0£®97 m/s£¨2·Ö£©£®

       £¨2£©G£¬B£¨Ã¿¿Õ2·Ö£© 

£¨3£©£¨2·Ö£©

 

¡¾½âÎö¡¿ÂÔ

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2009?ÉÇͷһģ£©Ä³ÊµÑéС×éÏë²âÁ¿Ä¾°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦£®×°ÖÃÈçͼ1£¬Ò»Ä¾¿é·ÅÔÚ´Ö²ÚµÄˮƽ³¤Ä¾°åÉÏ£¬ÓÒ²à˨ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓëÖØÎïÁ¬½Ó£¬Ä¾¿é×ó²àÓë´©¹ý´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬³¤Ä¾°å¹Ì¶¨ÔÚˮƽʵÑę́ÉÏ£®ÊµÑéʱ£¬Ä¾¿éÔÚÖØÎïÇ£ÒýÏÂÏòÓÒÔ˶¯£¬ÖØÎïÂäµØºó£¬Ä¾¿é¼ÌÐøÏòÓÒ×öÔȼõËÙÔ˶¯£¬Í¼2¸ø³öÁËÖØÎïÂäµØºó´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬ÏµÁÐСºÚµãÊǼÆÊýµã£¬Ã¿ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµã£¨Í¼ÖÐδ±ê³ö £©£¬¼ÆÊýµã¼äµÄ¾àÀëÈçͼËùʾ£®´òµã¼ÆʱÆ÷ËùÓý»Á÷µçƵÂÊΪ50Hz£¬²»¼ÆÖ½´øÓëľ¿é¼äµÄÀ­Á¦£®

£¨1£©¿ÉÒÔÅжÏÖ½´øµÄ
ÓÒ
ÓÒ
£¨×ó»òÓҶˣ©Óëľ¿éÁ¬½Ó£®¸ù¾ÝÖ½´øÌṩµÄÊý¾Ý¼ÆËã´òµã¼ÆʱÆ÷ÔÚ´òÏÂAµãºÍBµãʱľ¿éµÄËÙ¶ÈvA=
0.72
0.72
m/s£¬vB=
0.97
0.97
 m/s£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨2£©Òª²âÁ¿ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦WAB£¬»¹ÐèÒªµÄʵÑéÆ÷²ÄÊÇ
G
G
£¬»¹Ó¦²âÁ¿µÄÎïÀíÁ¿ÊÇ
B
B
£®£¨ÌîÈëËùѡʵÑéÆ÷²ÄºÍÎïÀíÁ¿Ç°µÄ×Öĸ£©
A£®Ä¾°åµÄ³¤¶Èl        B£®Ä¾¿éµÄÖÊÁ¿m1        C£®Ä¾°åµÄÖÊÁ¿m2
D£®ÖØÎïÖÊÁ¿m3        E£®Ä¾¿éÔ˶¯µÄʱ¼ät      F£®AB¶ÎµÄ¾àÀëlAB
G£®Ììƽ               H£®Ãë±í                 J£®µ¯»É³Ó
£¨3£©ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦µÄ¹ØϵʽWAB=
1
2
m1vA2-
1
2
m1vB2
1
2
m1vA2-
1
2
m1vB2
£®£¨ÓÃvA¡¢vBºÍµÚ£¨2£©ÎÊÖвâµÃµÄÎïÀíÁ¿µÄ×Öĸ±íʾ£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijʵÑéС×éÏë²âÁ¿Ä¾°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦£®×°ÖÃÈçͼ£¬Ò»Ä¾¿é·ÅÔÚ´Ö²ÚµÄˮƽ³¤Ä¾°åÉÏ£¬ÓÒ²à˨ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓëÖØÎïÁ¬½Ó£¬Ä¾¿é×ó²àÓë´©¹ý´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬³¤Ä¾°å¹Ì¶¨ÔÚˮƽʵÑę́ÉÏ£®ÊµÑéʱ£¬Ä¾¿éÔÚÖØÎïÇ£ÒýÏÂÏòÓÒÔ˶¯£¬ÖØÎïÂäµØºó£¬Ä¾¿é¼ÌÐøÏòÓÒ×öÔȼõËÙÔ˶¯£¬ÏÂͼ¸ø³öÁËÖØÎïÂäµØºó´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬ÏµÁÐСºÚµãÊǼÆÊýµã£¬Ã¿ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµã£¨Í¼ÖÐδ±ê³ö £©£¬¼ÆÊýµã¼äµÄ¾àÍøÀëÈçͼËùʾ£®´òµã¼ÆʱÆ÷ËùÓý»Á÷µçƵÂÊΪ50Hz£¬²»¼ÆÖ½´øÓëľ¿é¼äµÄÀ­Á¦£®

£¨1£©¿ÉÒÔÅжÏÖ½´øµÄ
ÓÒ¶Ë
ÓÒ¶Ë
×ó»òÓҶˣ©Óëľ¿éÁ¬½Ó£®¸ù¾ÝÖ½´øÌṩµÄÊý¾Ý¼ÆËã´òµã¼ÆʱÆ÷ÔÚ´òÏÂAµãºÍBµãʱľ¿éµÄËÙ¶ÈvA=
0.72
0.72
m/s£¬vB=
0.97
0.97
 m/s£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨2£©Òª²âÁ¿ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦WAB£¬»¹ÐèÒªµÄʵÑéÆ÷²ÄÊÇ
G
G
£¬»¹Ó¦²âÁ¿µÄÎïÀíÁ¿ÊÇ
B
B
£®£¨ÌîÈëËùѡʵÑéÆ÷²ÄºÍÎïÀíÁ¿Ç°µÄ×Öĸ£©
A£®Ä¾°åµÄ³¤¶Èl        B£®Ä¾¿éµÄÖÊÁ¿m1        C£®Ä¾°åµÄÖÊÁ¿m2
D£®ÖØÎïÖÊÁ¿m3         E£®Ä¾¿éÔ˶¯µÄʱ¼ät      F£®AB¶ÎµÄ¾àÀëlAB
G£®Ììƽ               H£®Ãë±í                 J£®µ¯»É³Ó£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

I£®ÓÃÏÂͼ1ËùʾµÄ×°ÖÃÑéÖ¤¶¯Á¿Êغ㶨ÂɵÄʵÑéÖУ¬Á½¸öСÇòÖÊÁ¿²»µÈ£¬°ë¾¶ÏàµÈ£®
¢ÙÐèÒª²âÁ¿µÄÁ¿ÓУº
A¡¢C
A¡¢C

A¡¢Á½¸öСÇòµÄÖÊÁ¿
B¡¢Ð±²ÛÄ©¶Ë¾àµØÃæµÄ¸ß¶È
C¡¢Oµãµ½M¡¢P¡¢N¸÷µãµÄ¾àÀëOM¡¢OP¡¢ON
D¡¢Ð±ÃæµÄ¸ß¶È
¢ÚÒÑÖªÇò1¡¢Çò2µÄÖÊÁ¿·Ö±ðÊÇm1¡¢m2£¬ÇÒm1
£¾
£¾
m2£¨Ìîд£¾£¬£¼£¬=£©£¬OµãÔÚÖØ´¸ÏßÕýÏ·½£¬M¡¢P¡¢NΪСÇòÂäµãλÖã¬ÆäÖÐMµãÊÇ
Çò1ÓëÇò2Åöײºóm1µÄ
Çò1ÓëÇò2Åöײºóm1µÄ
Âäµã£¬Ð´³öÌâÖÐÒªÑéÖ¤µÄ±í´ïʽ
m1OP=m1OM+m2ON
m1OP=m1OM+m2ON

¢òijʵÑéС×éÏë²âÁ¿Ä¾°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦£®×°ÖÃÈçͼ2£¬Ò»Ä¾¿é·ÅÔÚ´Ö²ÚµÄˮƽ³¤Ä¾°åÉÏ£¬ÓÒ²à˨ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓëÖØÎïÁ¬½Ó£¬Ä¾¿é×ó²àÓë´©¹ý´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬³¤Ä¾°å¹Ì¶¨ÔÚˮƽʵÑę́ÉÏ£®ÊµÑéʱ£¬Ä¾¿éÔÚÖØÎïÇ£ÒýÏÂÏòÓÒÔ˶¯£¬ÖØÎïÂäµØºó£¬Ä¾¿é¼ÌÐøÏòÓÒ×öÔȼõËÙÔ˶¯£¬Í¼3¸ø³öÁËÖØÎïÂäµØºó´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬ÏµÁÐСºÚµãÊǼÆÊýµã£¬Ã¿ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµã£¨Í¼ÖÐδ±ê³ö £©£¬¼ÆÊýµã¼äµÄ¾àÀëÈçͼËùʾ£®´òµã¼ÆʱÆ÷ËùÓý»Á÷µçƵÂÊΪ50Hz£¬²»¼ÆÖ½´øÓëľ¿é¼äµÄÀ­Á¦£®

£¨1£©¿ÉÒÔÅжÏÖ½´øµÄ
ÓÒ¶Ë
ÓÒ¶Ë
£¨×ó»òÓҶˣ©Óëľ¿éÁ¬½Ó£®¸ù¾ÝÖ½´øÌṩµÄÊý¾Ý¼ÆËã´òµã¼ÆʱÆ÷ÔÚ´òÏÂAµãºÍBµãʱľ¿éµÄËÙ¶ÈvA=
0.72
0.72
m/s£¬vB=
0.97
0.97
 m/s£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨2£©Òª²âÁ¿ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦WAB£¬»¹ÐèÒªµÄʵÑéÆ÷²ÄÊÇ
G
G
£¬»¹Ó¦²âÁ¿µÄÎïÀíÁ¿ÊÇ
B
B
£®£¨ÌîÈëËùѡʵÑéÆ÷²ÄºÍÎïÀíÁ¿Ç°µÄ×Öĸ£©
A£®Ä¾°åµÄ³¤¶Èl        B£®Ä¾¿éµÄÖÊÁ¿m1        C£®Ä¾°åµÄÖÊÁ¿m2
D£®ÖØÎïÖÊÁ¿m3         E£®Ä¾¿éÔ˶¯µÄʱ¼ät      F£®AB¶ÎµÄ¾àÀëlAB
G£®Ììƽ               H£®Ãë±í                 J£®µ¯»É³Ó
£¨3£©ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦µÄ¹ØϵʽWAB=
1
2
m1vA2-
1
2
m1vB2
1
2
m1vA2-
1
2
m1vB2
£®£¨ÓÃvA¡¢vBºÍµÚ£¨2£©ÎÊÖвâµÃµÄÎïÀíÁ¿µÄ×Öĸ±íʾ£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijʵÑéС×éÏë²âÁ¿Ä¾°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦£®×°ÖÃÈçͼ£¬Ò»Ä¾¿é·ÅÔÚ´Ö²ÚµÄˮƽ³¤Ä¾°åÉÏ£¬ÓÒ²à˨ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓëÖØÎïÁ¬½Ó£¬Ä¾¿é×ó²àÓë´©¹ý´òµã¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬³¤Ä¾°å¹Ì¶¨ÔÚˮƽʵÑę́ÉÏ£®ÊµÑéʱ£¬Ä¾¿éÔÚÖØÎïÇ£ÒýÏÂÏòÓÒÔ˶¯£¬ÖØÎïÂäµØºó£¬Ä¾¿é¼ÌÐøÏòÓÒ×öÔȼõËÙÔ˶¯£¬ÏÂͼ¸ø³öÁËÖØÎïÂäµØºó´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬ÏµÁÐСºÚµãÊǼÆÊýµã£¬Ã¿ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµã£¨Í¼ÖÐδ±ê³ö £©£¬¼ÆÊýµã¼äµÄ¾àÀëÈçͼËùʾ£®´òµã¼ÆʱÆ÷ËùÓý»Á÷µçƵÂÊΪ50Hz£¬²»¼ÆÖ½´øÓëľ¿é¼äµÄÀ­Á¦£®

    

 

£¨1£©¿ÉÒÔÅжÏÖ½´øµÄ      £¨×ó»òÓҶˣ©Óëľ¿éÁ¬½Ó£®¸ù¾ÝÖ½´øÌṩµÄÊý¾Ý¼ÆËã´òµã¼ÆʱÆ÷ÔÚ´òÏÂAµãºÍBµãʱľ¿éµÄËÙ¶ÈvA £½ ___________m/s£¬vB£½  ___________ m/s£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

   £¨2£©Òª²âÁ¿ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦WAB£¬»¹ÐèÒªµÄʵÑéÆ÷²ÄÊÇ     £¬»¹Ó¦²âÁ¿µÄÎïÀíÁ¿ÊÇ       £®£¨ÌîÈëËùѡʵÑéÆ÷²ÄºÍÎïÀíÁ¿Ç°µÄ×Öĸ£©

         A£®Ä¾°åµÄ³¤¶Èl                B£®Ä¾¿éµÄÖÊÁ¿m1               

         C£®Ä¾°åµÄÖÊÁ¿m2                D£®ÖØÎïÖÊÁ¿m3       

         E£®Ä¾¿éÔ˶¯µÄʱ¼ät              F£®AB¶ÎµÄ¾àÀëlAB

         G£®Ììƽ                       H£®Ãë±í                

         J£®µ¯»É³Ó

   £¨3£©ÔÚAB¶Îľ°å¶Ôľ¿éµÄĦ²ÁÁ¦Ëù×öµÄ¹¦µÄ¹ØϵʽWAB=                    £®

£¨ÓÃvA ¡¢vBºÍµÚ£¨2£©ÎÊÖвâµÃµÄÎïÀíÁ¿µÄ×Öĸ±íʾ£©

 

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸