ÔÚ¡°ÔȱäËÙÖ±ÏßÔ˶¯µÄ¹æÂÉ̽¾¿¡±µÄʵÑéÖУ¬Óôòµã¼ÆʱÆ÷¼Ç¼ֽ´øÔ˶¯µÄʱ¼ä£®¼ÆʱÆ÷ËùÓõçÔ´µÄƵÂÊΪ50Hz£¬Í¼ÎªÊµÑéµÃµ½µÄÖ½´ø£¨ÒѾ­ÉáȥǰÃæ±È½ÏÃܼ¯µÄµã£©£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼ä¶¼ÓÐËĸöµãδ»­³ö£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡­¶à¸ö¼ÆÊýµã£¬Óÿ̶ȳßÁ¿³öÏàÁÚÁ½¼ÆÊýµã¼äµÄ¾àÀëÈçͼËùʾ£¨µ¥Î»Îª£ºmm£©£¬ÓÉÓÚ²»Ð¡ÐÄ£¬¼¸ÌõÖ½´ø±»Ëº¶ÏÁË£¬»ìÔÚÒ»Æð£¬ÈçͼËùʾ£¬Çë¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£º

£¨1£©´ÓB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦¸ÃÊÇ
C
C
£»
£¨2£©´òAÖ½´øʱ£¬ÎïÌåµÄ¼ÓËٶȴóСΪa=
0.60
0.60
 m/s2£»£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨3£©ÎïÌåͨ¹ý1¼ÆÊýµãµÄËÙ¶ÈV1=
0.33
0.33
 m/s£®£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
·ÖÎö£º£¨1£©ÓÉ¡÷x=aT2ÊǸö³£Êý£¬¿ÉÖªÊÇÄÇÒ»¶Î£®
£¨2£©ÓÉ¡÷x=aT2¿ÉµÃÎïÌåµÄ¼ÓËٶȣ®
£¨3£©ÓÉƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËٶȿɵÃ1µãµÄËٶȣ®
½â´ð£º½â£º£¨1£©ÓÉxm-xn=(m-n)aT2£¬¡÷x=aT2ÊǸö³£Êý£¬¿ÉµÃ£ºx-36.0=3£¨36.0-30.0£©£¬½âµÃ£ºx=54.0
´ÓB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦¸ÃÊÇC£»
£¨2£©ÓÉ¡÷x=aT2¿ÉµÃÎïÌåµÄ¼ÓËٶȣº
a=
(36.0-30.0)¡Á10-3
0£®12
m/s2=0.60m/s2

£¨3£©ÓÉƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËٶȿɵÃ1µãµÄËÙ¶ÈΪ£º
v1=
(36.0+30.0)¡Á10-3
0.2
m/s=0.33m/s

¹Ê´ð°¸Îª£º£¨1£©C£®£¨2£©a=0.60£®£¨3£©v1=0.33£®
µãÆÀ£º±¾ÌâÖØÔÚÔÚÓÚ£¬¡÷x=aT2ÊǸö³£ÊýÒÔ¼°ËüµÄÍƹãʽxm-xn=(m-n)aT2µÄÓ¦Óã¬ÕâÒ²ÊDZ¾ÌâµÄÄѵ㣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼΪijͬѧÔÚ¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±µÄʵÑéÖдò³öµÄÖ½´øµÄÒ»²¿·Ö£¬ÆäÖРA¡¢B¡¢C ÎªÈý¸ö¼ÆÊýµã£¬ÒÑÖª´ËÎïÌå×öÔȱäËÙÖ±ÏßÔ˶¯£¬´òµã¼ÆʱÆ÷ʹÓà50Hz ½»Á÷µç£¬²âµÃ AB=3.27cm¡¢BC=8.00cm£¬ÔòÎïÌåÔ˶¯µ½BµãµÄËÙ¶ÈvB=
0.564
0.564
m/s£¬¼ÓËٶȠa=
4.73
4.73
m/s2£®£¨±£ÁôÈýλÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijͬѧÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬µÃµ½Á˼¸Ìõ½ÏΪÀíÏëµÄÖ½´ø£¬ÒÑÔÚÿÌõÖ½´øÉÏÿ5¸ö¼ÆʱµãÈ¡ºÃÁËÒ»¸ö¼ÆÊýµã£¬¼´Á½¼ÆÊýµãÖ®¼äµÄʱ¼ä¼ä¸ôΪ0.1s£¬ÒÀ´òµãÏȺó±àΪ0¡¢1¡¢2¡¢3¡¢4¡¢5£®ÓÉÓÚ²»Ð¡ÐÄ£¬Ö½´ø±»Ëº¶ÏÁË£¬ÈçͼËùʾ£®Çë¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£º£¨Ìî×Öĸ£©
£¨1£©´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦¸ÃÊÇB¡¢C¡¢DÈý¶ÎÖ½´øÖеÄ
C
C
£®
£¨2£©´òAÖ½´øʱ£¬ÎïÌåµÄ¼ÓËٶȴóСÊÇ
0.60
0.60
m/s2£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚ¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±µÄʵÑéÖУº
£¨1£©ÏÂÁз½·¨²»ÄܼõÉÙʵÑéÎó²îµÄÊÇ
B
B

A£®Ñ¡È¡¼ÆÊýµã£¬°Ñÿ´ò5¸öµãµÄʱ¼ä¼ä¸ô×÷Ϊһ¸öʱ¼äµ¥Î»
B£®Ê¹Ð¡³µÔ˶¯µÄ¼ÓËٶȾ¡Á¿Ð¡Ð©
C£®ÉáÈ¥Ö½´øÉÏ¿ªÊ¼Ê±Ãܼ¯µÄµã£¬Ö»ÀûÓõ㼣ÇåÎú¡¢µã¼ä¸ôÊʵ±µÄÄÇÒ»²¿·Ö½øÐвâÁ¿¡¢¼ÆËã
D£®Êʵ±Ôö¼Ó¹ÒÔÚϸÉþϹ³ÂëµÄ¸öÊý
£¨2£©ÈçͼËùʾÊÇÒ»´ÎʵÑéµÃµ½µÄÒ»ÌõÖ½´ø£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼äʱ¼ä¼ä¸ôΪT=0.1S£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡¢4¡¢5¡¢6Æ߸ö¼ÆÊýµã£¬Óÿ̶ȳßÁ¿³ö1¡¢2¡¢3¡¢4¡¢5¡¢6µãµ½0µãµÄ¾àÀë·Ö±ðΪ1.40cm¡¢3.55cm¡¢6.45cm¡¢10.15cm¡¢14.55cm¡¢19.70cm£®ÓÉÖ½´øÊý¾Ý¼ÆËã¿ÉµÃ¼ÆÊýµã4Ëù´ú±íʱ¿ÌµÄ˲ʱËٶȴóСΪv4=
0.405
0.405
 m/s£¬Ð¡³µµÄ¼ÓËٶȴóСa=
0.756
0.756
m/s2£®£¨½á¹û¾ù±£ÁôÈýλÓÐЧÊý×Ö£©
 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ôڲⶨ¡°ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȡ±µÄʵÑéÖУ¬´òµã¼ÆʱÆ÷µÄ¹¤×÷µçÔ´ÊÇ
½»Á÷µçÔ´
½»Á÷µçÔ´
£¨Ìî¡°½»Á÷µçÔ´¡±»ò¡°Ö±Á÷µçÔ´¡±£©£®µ±µçԴƵÂÊΪ50Hzʱ£¬ÏàÁÚ´òµãʱ¼ä¼ä¸ôÊÇ
0.02
0.02
s£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËÙ¶ÈʵÑéÖУ¬Ð¡³µÍÏ×ÅÖ½´øÔ˶¯£¬´òµã¼ÆʱÆ÷ÿ0.02s´òÒ»´Îµã£®´ò³öµÄÖ½´øÈçͼËùʾ£®Ñ¡³öA¡¢B¡¢C¡¢D¡¢E¹²5¸ö¼ÇÊýµã£¬Ã¿ÏàÁÚÁ½µã¼ä»¹ÓÐ4¸öʵÑéµã£¨Í¼ÖÐδ»­³ö£©£¬ÒÔAΪÆðµã£¬Á¿³öµ½¸÷µãµÄλÒÆΪAB=1.60cm£¬AC=3.40cm£¬AD=5.40cm£¬AE=7.60cm£¬¿É¸ù¾ÝʵÑéÊý¾ÝÇóµÃС³µÔÚ CµãµÄ˲ʱËٶȦÔC=
 
m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËÙ¶Èa=
 
m/s2£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸