ÎÀÐÇÈƵØÇò×öÔÈËÙÔ²ÖÜÔ˶¯Ê±´¦ÓÚÍêȫʧÖØ״̬£¬ÔÚÕâÖÖ»·¾³ÖÐÎÞ·¨ÓÃÌìƽ³ÆÁ¿ÎïÌåµÄÖÊÁ¿¡£Ä³Í¬Ñ§Ôڸû·¾³ÖÐÉè¼ÆÁËÓÒͼËùʾµÄ×°ÖÃÀ´¼ä½Ó²âÁ¿ÎïÌåAµÄÖÊÁ¿¡£¸ø´ý²âÎïÌåAÒ»¸ö³õËٶȣ¬Ê¹Ö®ÔÚ×ÀÃæÉÏ×öÔÈËÙÔ²ÖÜÔ˶¯¡£É躽ÌìÆ÷ÖгýÓÒͼËùʾµÄµ¯»É³ÓÍ⣬»¹Óп̶ȳߺÍÃë±í¡£Ôò£º
£¨1£©×ÀÃæ¸øÎïÌåAµÄĦ²ÁÁ¦ÄÜ·ñºöÂÔ²»¼Æ£¿ÎªÊ²Ã´£¿
´ð£º                                               
£¨2£©ÊµÑéÖУ¬ÐèÒª²âÁ¿µÄÎïÀíÁ¿ÊÇÄÄЩ£¿
´ð£º                                               
£¨3£©Ð´³öËù²âÎïÌåAµÄÖÊÁ¿µÄ±í´ïʽ¡£
´ð£º                                               
(1)´ð£º ÄܺöÂÔ¡£ÒòÎïÌåA¶Ô×ÀÃæµÄÕýѹÁ¦N=0£¬¹ÊÎïÌåAËùÊÜĦ²ÁÁ¦f=0  
£¨3·Ö£©£¨2£©´ð£ºÒª²âÇáÉþ¶ÔÎïÌåAµÄÀ­Á¦F£¨µ¯»É³ÓʾÊý£©£¬ÎïÌå×öÔ²ÖÜÔ˶¯µÄ°ë¾¶RºÍÖÜÆÚT     
£¨2·Ö£©£¨3£©´ð£º
£¨1£©×ÀÃæ¸øÎïÌåAµÄĦ²ÁÁ¦ÄܺöÂÔ£¬ÒòÎïÌåA¶Ô×ÀÃæµÄÕýѹÁ¦N=0£¬¹ÊÎïÌåAËùÊÜĦ²ÁÁ¦f=0 
£¨2£©Éþ×ÓµÄÀ­Á¦ÌṩСÇò×öÔ²ÖÜÔ˶¯µÄÏòÐÄÁ¦£¬ÊµÑéÖУ¬ÐèÒª²âÁ¿µÄÎïÀíÁ¿ÓУ¬ÇáÉþ¶ÔÎïÌåAµÄÀ­Á¦F£¨µ¯»É³ÓʾÊý£©£¬ÎïÌå×öÔ²ÖÜÔ˶¯µÄ°ë¾¶RºÍÖÜÆÚT £¬
£¨3£©£¬ËùÒÔËù²âÎïÌåAµÄÖÊÁ¿µÄ±í´ïʽΪm=
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

ΪÁË̽¾¿µ¯»Éµ¯Á¦FºÍµ¯»ÉÉ쳤Á¿xµÄ¹Øϵ£¬Ä³Í¬Ñ§Ñ¡ÁËA¡¢BÁ½¸ù¹æ¸ñ²»Í¬µÄµ¯»É½øÐвâÊÔ£¬¸ù¾Ý²âµÃµÄÊý¾Ý»æ³öÈçͼËùʾµÄͼÏñ£¬´ÓͼÏñÉÏ¿´£¬¸ÃͬѧûÄÜÍêÈ«°´ÊµÑéÒªÇó×ö£¬Ê¹Í¼ÏñÉ϶˳ÉΪÇúÏߣ¬Í¼ÏñÉ϶˳ÉΪÇúÏßµÄÔ­ÒòÊÇ                       £¬µ¯»ÉBµÄ¾¢¶ÈϵÊýΪ               £®ÈôÒªÖÆ×÷Ò»¸ö¾«È·¶È½Ï¸ßµÄµ¯»É²âÁ¦¼Æ£¬Ó¦Ñ¡µ¯»É          £¨Ñ¡Ìî¡°A¡±»ò¡°B¡±£© £®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

ÒÔÏÂʵÑéÖпÉÒÔÓôòµã¼ÆʱÆ÷ºÍÖ½´ø²âËٶȽøÐÐÊý¾Ý´¦ÀíµÄÓР                                   £¨    £©
A£®Ñé֤ţ¶ÙÔ˶¯¶¨ÂÉ
B£®ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò
C£®Ì½¾¿¶¯Äܶ¨Àí
D£®ÑéÖ¤»úеÄÜÊغ㶨ÂÉ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

ÔÚ×ö¡°»¥³É½Ç¶ÈµÄ¹²µãÁ¦µÄºÏ³É¡±µÄʵÑéÖУ¬½«ÏðƤÌõµÄÒ»¶Ë¹Ì¶¨£¬ÁíÒ»¶ËÔÚÁ¦F1¡¢F2µÄ¹²Í¬×÷ÓÃϱ»À­ÖÁOµã£¬ÈçͼËùʾ£®ÏÖ±£³ÖÏðƤÌõ±»À­ÖÁOµã²»¶¯£¬F2µÄ·½Ïò²»±ä£¬¸Ä±äF1µÄ´óСºÍ·½Ïò£¬ÔÚF1ºÍF2Ö®¼äµÄ¼Ð½ÇÓɶ۽ÇÖð½¥¼õСΪÈñ½ÇµÄ¹ý³ÌÖУ¬F1µÄ´óС½«
A£®Ò»Ö±¼õС
B£®Ò»Ö±Ôö´ó
C£®ÏÈÔö´óºó¼õС
D£®ÏȼõСºóÔö´ó

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

ÔÚ¡°Ì½¾¿Ð¡³µËÙ¶ÈËæʱ¼ä±ä»¯¹æÂÉ¡±µÄʵÑéÖÐ:
СÌâ1:µç»ð»¨¼ÆʱÆ÷Õý³£¹¤×÷ʱ£¬Æä´òµãµÄÖÜÆÚÈ¡¾öÓÚ£¨    £©   
A£®½»Á÷µçѹµÄ¸ßµÍ¡¡¡¡
B£®½»Á÷µçµÄƵÂÊ
C£®Ä«·ÛÖ½Å̵ĴóС¡¡¡¡
D£®Ö½´øµÄ³¤¶È
СÌâ2:ÏÂÁвÙ×÷ÖÐÕýÈ·µÄÓР        ¡££¨ÌîÑ¡Ïî´úºÅ£©
A£®ÔÚÊÍ·ÅС³µÇ°£¬Ð¡³µÒª¿¿½ü´òµã¼ÆʱÆ÷
B£®´òµã¼ÆʱÆ÷Ó¦·ÅÔÚ³¤Ä¾°åµÄÓл¬ÂÖÒ»¶Ë
C£®Ó¦ÏȽÓͨµçÔ´£¬ºóÊÍ·ÅС³µ
D£®µç»ð»¨¼ÆʱÆ÷ӦʹÓõÍѹ½»Á÷µçÔ´
СÌâ3:ÈçͼËùʾΪͬһ´òµã¼ÆʱÆ÷ÔÚËÄÌõˮƽÔ˶¯µÄÖ½´øÉÏ´ò³öµÄµã,ËÄÌõÖ½´øµÄa¡¢b¼äµÄ¼ä¾àÏàµÈ£¬Ôòa¡¢b¼äµÄƽ¾ùËÙ¶È×îСµÄÊÇÄÄÒ»Ìõ? £¨    £©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

ÔÚ¡°Ì½¾¿¹²µãÁ¦ºÏ³ÉµÄ¹æÂÉ¡±ÊµÑéÖУ¬Á½Ö»µ¯»É²âÁ¦¼ÆÀ­ÏðƤ½îʱ£¬µ¯»É²âÁ¦¼ÆµÄʾÊý·Ö±ðÊÇF1ºÍF2£¬ÒÔÁ½¸ö¹²µãÁ¦F1ºÍF2µÄÏ߶ÎΪÁÚ±ß×÷ƽÐÐËıßÐΣ¬ÕâÁ½¸öÁÚ±ßÖ®¼äµÄ¶Ô½ÇÏß±íʾµÄÁ¦ÊÇF3£¬ÓÃÒ»Ö»µ¯»É²âÁ¦¼ÆÀ­ÏðƤ½îʱ£¬µ¯»É²âÁ¦¼ÆµÄʾÊýÊÇF4£®ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨     £©
A£®Ì½¾¿µÄÊÇF1ÓëF2µÄ¹Øϵ
B£®Ì½¾¿µÄÊÇF1¡¢F2ÓëF3µÄ¹Øϵ
C£®Ì½¾¿µÄÊÇF1¡¢F2ÓëF4µÄ¹Øϵ
D£®Ì½¾¿¹ý³ÌÖÐÐèÒª¼Ç¼µÄÊý¾ÝÓÐF1¡¢F2¡¢F3ºÍF4

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

(Ò»).ÔÚ¹²µãÁ¦ºÏ³ÉµÄʵÑéÖУ¬¸ù¾ÝʵÑéÊý¾Ý»­³öÁ¦µÄͼʾ£¬Èçͼ¡£Í¼Éϱê³öÁËF1¡¢F2¡¢F¡¢F¡ä ËĸöÁ¦£¬ÆäÖÐ______£¨ÌîÉÏÊö×Öĸ£©²»ÊÇÓɵ¯»É³ÓÖ±½Ó²âµÃµÄ£»ÈôFÓëF¡äµÄ________»ù±¾ÏàµÈ,_______»ù±¾Ïàͬ£¬ËµÃ÷¹²µãÁ¦ºÏ³ÉµÄƽÐÐËıßÐж¨ÔòµÃµ½ÁËÑéÖ¤¡£
(¶þ).ÔÚÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑéÖУ¬¶ÔÓÚ×ÔÓÉÏÂÂäµÄÖØÎÏÂÊöÑ¡ÔñµÄÌõ¼þ¸üΪÓÐÀûµÄÊÇ(       )
A£®Ö»Òª×ã¹»ÖؾͿÉÒÔ
B£®Ö»ÒªÌå»ý×㹻С¾Í¿ÉÒÔ
C£®¼ÈÒª×ã¹»ÖØ£¬ÓÖÒªÌå»ý·Ç³£Ð¡
D£®Ó¦¸ÃÃܶȴóЩ£¬»¹Ó¦±ãÓڼнôÖ½´ø£¬Ê¹Ö½´øËæͬÔ˶¯Ê±²»ÖÂŤÇú

£¨Èý£©.ijͬѧÀûÓÃÈçͼËùʾµÄʵÑé×°ÖÃÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬»¡
ÐιìµÀÄ©¶Ëˮƽ£¬ÀëµØÃæµÄ¸ß¶ÈΪH£¬½«¸ÖÇò´Ó¹ìµÀµÄ²»Í¬¸ß¶Èh´¦
¾²Ö¹ÊÍ·Å£¬¸ÖÇòµÄÂäµã¾à¹ìµÀÄ©¶ËµÄˮƽ¾àÀëΪs£®
Èô¹ìµÀÍêÈ«¹â»¬£¬s2ÓëhµÄÀíÂÛ¹ØϵӦÂú×ãs2=____£¨ÓÃH¡¢h±íʾ£©£®
£¨ËÄ£©.ÔÚ×ö¡°»¥³É½Ç¶ÈµÄÁ½¸ö¹²µãÁ¦µÄºÏ³É¡±µÄʵÑéÖÐÓÐÒÔÏÂʵÑé²½
Ö裬ÆäºÏÀí˳ÐòÊÇ____________________£¨ÓÃÏàÓ¦×Öĸ±íʾ£©
A£®Í¨¹ý¸Ä±äÁ½¸öÀ­Á¦µÄ´óСºÍ·½Ïò£¬´Ó¶ø¸Ä±äÏðƤÌõµÄÉ쳤£¬ÔÙÖظ´×ö¼¸´Î£»   
B£®Ö»ÓÃÒ»¸öµ¯»É³Ó£¬Í¨¹ýϸÉþ°ÑÏðƤÌõµÄ½áµãÀ­µ½Í¬ÑùµÄλÖÃO£®¼Çϵ¯»É³ÓµÄ¶ÁÊý
ºÍϸÉþµÄ·½Ïò£¬°´Í¬Ñù±ÈÀý×÷³öÕâ¸öÁ¦F¡¯µÄͼʾ£»
C£®ÔÚ×ÀÃæÉÏ·ÅÒ»¿é·½Ä¾°å£¬ÔÚľ°åÉϵæÒ»ÕÅ°×Ö½£¬°ÑÏðƤÌõÒ»¶Ë¹Ì¶¨ÔÚľ°åµÄAµã£»
D£®¼ÇÏÂÁ½¸öµ¯»É³ÓµÄ¶ÁÊýÒÔ¼°½áµãµÄλÖã¬ÃèÏÂÁ½ÌõϸÉþµÄ·½Ïò£¬ÔÚÖ½ÉÏ°´±ÈÀý×÷³öÁ¦F1ºÍF2µÄͼʾ£¬ÓÃƽÐÐËıßÐζ¨ÔòÇó³ö£¨×÷³ö£©ºÏÁ¦F£»
E£®±È½ÏÁ¦F¡¯ÓÃƽÐÐËıßÐζ¨ÔòÇó³öµÄÁ¦F£¬¿´ËüÃÇÔÚʵÑéÎó²î·¶Î§ÄÚÊÇ·ñÏàµÈ£»
F.ÓÃÁ½ÌõϸÉþ½áÔÚÏðƤÌõµÄÁíÒ»¶Ë£¨¼´½áµã£©£¬Í¨¹ýϸÉþÓÃÁ½¸öµ¯»É³Ó»¥³É½Ç¶ÈÀ­Ïð
ƤÌõ£¬ÏðƤÌõÉ쳤£¬Ê¹½áµãµ½´ïijһλÖÃO£»

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÌî¿ÕÌâ

ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖУ¬ÖÊÁ¿Îª1kgµÄÖØ´¸×ÔÓÉÏÂÂ䣬ͨ¹ý´òµã¼ÆʱÆ÷ÔÚÖ½´øÉϼǼÔ˶¯¹ý³Ì£¬´òµã¼ÆʱÆ÷Ëù½ÓµçԴΪ6V¡¢50HzµÄ½»Á÷µçÔ´£¬Èçͼ3Ëùʾ£¬Ö½´øÉÏOµãΪÖØ´¸×ÔÓÉÏÂÂäʱֽ´ø´òµãÆðµã£¬Ñ¡È¡µÄ¼ÆÊýµãA¡¢B¡¢C¡¢DÒÀ´Î¼ä¸ôÒ»¸öµã£¨Í¼ÖÐδ»­³ö£©£¬¸÷¼ÆÊýµãÓëOµã¾àÀëÈçͼËùʾ£¬µ¥Î»Îªmm£¬ÖØÁ¦¼ÓËÙ¶ÈΪ9.80m/s2£¬Ôò

СÌâ1:´òµã¼ÆʱÆ÷¼Ç¼Bµãʱ£¬ÖØ´¸ËÙ¶ÈvB=_______m/s£¬ÖØ´¸¶¯ÄÜEKB=_______J¡£
СÌâ2:´Ó¿ªÊ¼ÏÂÂäËãÆ𣬴òµã¼ÆʱÆ÷¼Ç¼ Bµãʱ£¬ÖØ´¸ÊÆÄܼõÉÙÁ¿Îª          J¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

(5·Ö)Èçͼ12ËùʾΪ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÎïÌåÖÊÁ¿¡¢ÎïÌåÊÜÁ¦µÄ¹Øϵ¡±µÄʵÑéÖÐÓôòµã¼Æ  
ʱÆ÷´ò³öµÄÒ»Ìõ½ÏÀíÏëµÄÖ½´ø£¬Ö½´øÉÏA¡¢B¡¢C¡¢D¡¢E¡¢F¡¢GΪÆ߸öÏàÁڵļÆÊýµã£¬
ÏàÁÚ¼ÆÊýµã¼äµÄʱ¼ä¼ä¸ôÊÇ0.1 s£¬¾àÀëÈçͼ£¬µ¥Î»ÊÇcm£¬Ð¡³µµÄ¼ÓËÙ¶ÈÊÇ________m/s2.

ͼ12

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸