£¨1£©ÔÚ¡°²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȡ±µÄʵÑéÖУ¬ÊµÑéÊÒÌṩÁËÒÔÏÂÆ÷²Ä£ºµç»ð»¨´òµã¼ÆʱÆ÷¡¢Ò»¶Ë¸½Óл¬Âֵij¤Ä¾°å¡¢Ð¡³µ¡¢Ö½´ø¡¢Ï¸Éþ¡¢¹³Âë¡¢¿Ì¶È³ß¡¢½»Á÷µçÔ´¡¢Ãë±í¡¢µ¯»É²âÁ¦¼Æ£®ÆäÖÐÔÚ±¾ÊµÑéÖв»ÐèÒªµÄÆ÷²ÄÊÇ
 
£®
£¨2£©Èçͼ1Ëùʾ£¬ÊÇijͬѧÓÉ´òµã¼ÆʱÆ÷µÃµ½µÄ±íʾС³µÔ˶¯¹ý³ÌµÄÒ»ÌõÇåÎúÖ½´ø£¬´òµã¼ÆʱÆ÷´òµãµÄʱ¼ä¼ä¸ôT=0.02s£¬½«Ö½´øÉÏÿ¸ôËĸöµã£¨Í¼ÉÏû»­³ö£©°´´òµã˳ÐòÒÀ´Î±êΪA¡¢B¡¢C¡­£¬ÆäÖÐx1=7.05cm¡¢x2=7.68cm¡¢x3=8.33cm¡¢x4=8.95cm¡¢x5=9.61cm¡¢x6=10.26cm£®
¾«Ó¢¼Ò½ÌÍø
ϱíÁгöÁË´òµã¼ÆʱÆ÷´òÏÂB¡¢C¡¢FʱС³µµÄ˲ʱËٶȣ¬ÇëÔÚ±íÖÐÌîÈë´òµã¼ÆʱÆ÷´òÏÂDµãʱС³µµÄ˲ʱËٶȣ®
λÖà B C D E F
ËÙ¶È/£¨m?s-1£© 0.737 0.801 0.928 0.994
£¨3£©ÒÔAµãΪ¼ÆʱÆðµã£¬ÔÚͼ2×ø±êͼÖл­³öС³µµÄËÙ¶È-ʱ¼ä¹ØϵͼÏߣ®£¨»­ÔÚ´ð¾íÉÏ£©
£¨4£©¸ù¾ÝÄã»­³öµÄС³µµÄËÙ¶È-ʱ¼ä¹ØϵͼÏß¼ÆËã³öµÄС³µµÄ¼ÓËÙ¶Èa=
 
m/s2£®·½ÏòÊÇ
 
£¨ÌîA¡úB£¬»òB¡úA£©
·ÖÎö£º¸ù¾ÝʵÑéÄ¿µÄÃ÷ȷʵÑé²½ÖèºÍËùÒª²âÁ¿µÄÎïÀíÁ¿£¬¼´¿ÉÖªµÀʵÑéËùÐèÒªµÄʵÑéÆ÷²Ä£®
ÔÚÔȱäËÙÖ±ÏßÔ˶¯ÖУ¬Ê±¼äÖеãµÄËٶȵÈÓڸùý³ÌÖеÄƽ¾ùËٶȣ®
ÀûÓÃÃèµã·¨¿É»­³öËÙ¶È-ʱ¼äͼÏó£¬Í¼ÏóµÄбÂÊ´óС±íʾ¼ÓËٶȴóС
½â´ð£º½â£º£¨1£©ÔÚ±¾ÊµÑéÖв»ÐèÒª²âÁ¿Á¦µÄ´óС£¬Òò´Ë²»ÐèÒªµ¯»É²âÁ¦¼Æ£®´òµã¼ÆʱÆ÷¼Ç¼ÁËС³µÔ˶¯Ê±¼ä£¬Òò´Ë²»ÐèÒªÃë±í£®
¹Ê²»ÐèÒªµÄÆ÷²ÄΪ£ºµ¯»É²âÁ¦¼Æ£¬Ãë±í£®
£¨2£©ÓÉÓÚÿÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐ4¸öµãûÓл­³ö£¬ËùÒÔÏàÁڵļÆÊýµã¼äµÄʱ¼ä¼ä¸ôT=0.1s£¬
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯Öмäʱ¿ÌµÄ˲ʱËٶȵÈÓÚÕâ¶Îʱ¼äÄÚµÄƽ¾ùËÙ¶ÈÖª£º
vD=
x3+x4
2T
=
(8.33+8.95)¡Á0.01 m
2¡Á0.1s
=0.864 m/s
£¨3£©ÀûÓÃÃèµã·¨¿É»­³öËÙ¶È-ʱ¼äͼÏó£º
¾«Ó¢¼Ò½ÌÍø
£¨4£©ÔÚv-tͼÏóÖУ¬Í¼ÏóµÄбÂʱíʾ¼ÓËٶȵĴóС£¬ËùÒÔÓУº
a=
¡÷v
¡÷t
=
1.00-0.70
0.50-0.04
m/s2=0.65 m/s2£®
¸ù¾ÝÖ½´øÊý¾ÝµÃ³ö´ÓAµ½GÏàÁڵļÆÊýµã¼ä¾àÀëÔ½À´Ô½´ó£¬ËùÒÔ´ÓAµãµ½GµãÎïÌå×ö¼ÓËÙÔ˶¯£®
ÎïÌå×ö¼ÓËÙÔ˶¯£¬¼ÓËٶȷ½ÏòÓëËٶȷ½ÏòÏàͬ£¬ËùÒÔ¼ÓËٶȷ½ÏòÊÇB¡úA£®
¹Ê´ð°¸Îª£º£¨1£©µ¯»É²âÁ¦¼Æ£¬Ãë±í£®
£¨2£©0.864£¬
£¨3£©ÈçÉÏͼ
£¨4£©0.65£¬B¡úA
µãÆÀ£º¶ÔÓÚʵÑéÆ÷²ÄµÄÑ¡È¡Ò»ÊǸù¾ÝʵÑéÄ¿µÄ½øÐУ¬¶þÊÇÒª½øÐж¯ÊÖʵÑ飬Ìå»áÿÖÖÆ÷²ÄµÄ×÷Óã®
¿¼²éÁËÓйØÖ½´ø´¦ÀíµÄ»ù±¾ÖªÊ¶£¬Æ½Ê±Òª¼ÓÇ¿»ù´¡ÊµÑéµÄʵ¼Ê²Ù×÷£¬Ìá¸ß²Ù×÷¼¼ÄܺÍÊý¾Ý´¦ÀíÄÜÁ¦£®Òª×¢ÒⵥλµÄ»»ËãºÍÓÐЧÊý×ֵı£Áô£®
ͬʱעÒâÀûÓÃͼÏóÀ´½â¾öÎÊÌ⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔڲⶨÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȵÄʵÑéÖУ¬Ñ¡¶¨Ò»ÌõÖ½´øÈçͼËùʾ£¬ÆäÖÐ0¡¢1¡¢2¡¢3¡¢4¡¢5¡¢6¶¼Îª¼ÇÊýµã£¬ÆäÖÐÁ½ÏàÁÚ¼ÆÊýµã¼äÓÐËĸöµãδ»­³ö£®²âµÃ£ºx1=1.40cm£¬x2=1.90cm£¬x3=2.38cm£¬x4=2.88cm£¬x5=3.39cm£¬x6=3.87cm£®

¢ÙÔÚ¼ÆʱÆ÷´ò³öµã4ʱ£¬Ð¡³µµÄËÙ¶Èv4=
31.35
31.35
cm/s£¬È«¹ý³Ì¼ÓËÙ¶Èa=
49.6
49.6
cm/s2£®
¢ÚÈç¹ûµ±Ê±µçÍøÖн»±äµçÁ÷µÄƵÂÊÊÇf=51Hz£¬¶ø×öʵÑéµÄͬѧ²¢²»ÖªµÀ£¬ÄÇô¼ÓËٶȵIJâÁ¿ÖµÓëʵ¼ÊÖµÏà±È
ƫС
ƫС
£¨Ñ¡Ìƫ´ó¡¢Æ«Ð¡»ò²»±ä£©£®
£¨2£©µÎË®·¨²âÖØÁ¦¼ÓËٶȵÄ×÷·¨ÈçÏ£º
¢ÙÈÃË®µÎÂäµ½µæÆðÀ´µÄÅÌ×ÓÉÏ£¬¿ÉÒÔÌýµ½Ë®µÎÿ´ÎÅöÅÌ×ÓµÄÉùÒô£¬×ÐϸµØµ÷ÕûË®ÁúÍ·µÄ·§ÃÅ£¬Ê¹µÚÒ»µÎË®Åöµ½Å̵Ä˲¼ä£¬Í¬Ê±µÚ¶þµÎË®ÕýºÃ´Ó·§ÃÅ´¦¿ªÊ¼ÏÂÂ䣮
¢Ú´ÓÌýµ½Ä³¸öË®µÎµÄÉùÒôʱ¿ªÊ¼¼Æʱ£¬²¢Êý¡°0¡±£¬ÒÔºóÿÌýµ½Ò»´ÎÏìÉù£¬Ë³´Î¼Ó1£¬Ö±µ½Êýµ½¡°100¡±£¬¼Æʱֹͣ£¬Ãë±íÉÏʱ¼äΪ40s£®
¢ÛÓÃÃ׳ßÁ¿³öË®ÁúÍ·µÎË®´¦µ½ÅÌ×ӵľàÀëΪ78.56cm£®
¸ù¾ÝÉÏÊöʵÑéËùµÃµÄÊý¾Ý£¬¼ÆËã³öÖØÁ¦¼ÓËٶȵÄֵΪ
9.82
9.82
 m/s2£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2011?Ë«Á÷ÏØÄ£Ä⣩£¨1£©ÔÚ¡°²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУº
£¨1£©³ý´òµã¼ÆʱÆ÷£¨º¬Ö½´ø¡¢¸´Ð´Ö½£©¡¢Ð¡³µ¡¢Ò»¶Ë¸½Óл¬Âֵij¤Ä¾°å¡¢Ï¸Éþ¡¢¹³Âë¡¢µ¼Ïß¼°¿ª¹ØÍ⣬ÔÚÏÂÃæµÄÒÇÆ÷ºÍÆ÷²ÄÖУ¬±ØÐëʹÓõÄÓÐ
AC
AC
£®£¨ÌîÑ¡Ïî´úºÅ£©
A£®µçѹºÏÊʵÄ50HZ½»Á÷µçÔ´    B£®µçѹ¿Éµ÷µÄÖ±Á÷µçÔ´      C£®¿Ì¶È³ß     D£®Ãë±í         E£®Ììƽ
£¨2£©Í¼Ê¾ÎªÒ»´ÎʵÑéµÃµ½µÄÒ»ÌõÖ½´ø£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼ä¶¼ÓÐËĸöµãδ»­³ö£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡¢4¡¢5¡¢6Æ߸ö¼ÆÊýµã£¬²â³ö1¡¢2¡¢3¡¢4¡¢5¡¢6µãµ½0µãµÄ¾àÀëÈçͼËùʾ£¨µ¥Î»£ºcm£©£®ÓÉÖ½´øÊý¾Ý¼ÆËã¿ÉµÃ¼ÆÊýµã4Ëù´ú±íʱ¿ÌµÄ¼´Ê±ËٶȴóСv4=
0.41
0.41
m/s£¬Ð¡³µµÄ¼ÓËٶȴóСa=
0.76
0.76
m/s2£¨×¢Ò⣺±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

£¨2£©Á½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨a£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚµç×èr£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬Ò»¸öͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬Áíһͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV2µÄ²âÁ¿Êý¾Ý£®²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ£¨b£©ËùʾÁ½ÌõU-IͼÏߣ®»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©¸ù¾Ý¼×¡¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߣ¬¿ÉÖª
AD
AD

A£®¼×ͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
B£®¼×ͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
C£®ÒÒͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
D£®ÒÒͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
£¨2£©Í¼ÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµÄÎïÀíÒâÒåÊÇ
BC
BC

A£®»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×îÓҶˠ     B£®µçÔ´µÄÊä³ö¹¦ÂÊ×î´ó
C£®¶¨Öµµç×èR0ÉÏÏûºÄµÄ¹¦ÂÊΪ0.5W          D£®µçÔ´µÄЧÂÊ´ïµ½×î´óÖµ
£¨3£©¸ù¾Ýͼ£¨b£©£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0=
2.0
2.0
¦¸£¬µçÔ´µç¶¯ÊÆE=
1.5
1.5
V£¬ÄÚµç×èr=
1.0
1.0
¦¸£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨4£©¸Ãµç·ÖеçÁ÷±íµÄ¶ÁÊýÄÜ·ñ´ïµ½0.6A£¬ÊÔ˵Ã÷ÀíÓÉ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2011?½ÒÑôÄ£Ä⣩£¨1£©ÔÚ¡°²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȡ±µÄʵÑéÖУ¬Óôòµã¼ÆʱÆ÷¼Ç¼ֽ´øÔ˶¯µÄʱ¼ä£®ËùÓõçÔ´µÄƵÂÊΪ50Hz£¬Èçͼ£¨1£©ÎªÒ»´ÎʵÑéµÃµ½µÄÒ»ÌõÖ½´ø£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼ä¶¼ÓÐËĸöµãδ»­³ö£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡¢4¡¢5Áù¸ö¼ÆÊýµã£¬Óÿ̶ȳßÁ¿³ö¸÷µãµ½0µãµÄ¾àÀëÈçͼ1Ëùʾ£¨µ¥Î»£ºcm£©£®ÓÉÖ½´øÊý¾Ý¼ÆËã¿ÉµÃ¼ÆÊýµã4Ëù´ú±íʱ¿ÌµÄ˲ʱËٶȴóСv4=
0.405
0.405
m/s£¬Ð¡³µµÄ¼ÓËٶȴóСa=
0.756
0.756
m/s2£®£¨±£ÁôÈýλÓÐЧÊý×Ö£©
£¨2£©Ó÷ü°²·¨²âÒ»½Ú¸Éµç³ØµÄµç¶¯ÊÆEºÍÄÚµç×èr£¬Ëù¸øµÄÆ÷²ÄÓУº£¨A£©µçѹ±í£º0-3-15V£»£¨B£©µçÁ÷±í£º0-0.6-3A£»£¨C£©±ä×èÆ÷R1£¨×ܵç×è20¦¸£©£»£¨D£©±ä×èÆ÷R2£¨×ܵç×è100¦¸£©£»ÒÔ¼°µç¼üSºÍµ¼ÏßÈô¸É£®
¢Ùµçѹ±íÁ¿³ÌÑ¡ÓÃ
0-3V
0-3V
£¬µçÁ÷±íÁ¿³ÌÑ¡ÓÃ
0-0.6A
0-0.6A
£¬±ä×èÆ÷Ñ¡ÓÃ
R1
R1
£®
¢ÚÔÚÈçͼ£¨2£©µÄ·½¿òÖл­³öʵÑéµç·ͼ£®
¢ÛÈçͼ£¨3£©ËùʾµÄU-IͼÉÏÊÇÓÉʵÑé²âµÃµÄ7×éÊý¾Ý±ê³öµÄµã£¬ÇëÄãÍê³ÉͼÏߣ¬²¢ÓÉͼÏßÇó³öE=
1.50
1.50
V£¬r=
0.5
0.5
¦¸£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȡ±µÄʵÑéÖУ¬Óôòµã¼ÆʱÆ÷¼Ç¼ֽ´øÔ˶¯µÄʱ¼ä£®¼ÆʱÆ÷ËùÓõçÔ´µÄƵÂÊΪ50Hz£¬Èçͼ1Ϊһ´ÎʵÑéµÃµ½µÄÒ»ÌõÖ½´ø£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼ä¶¼ÓÐËĸöµãδ»­³ö£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡¢4¡¢5Áù¸ö¼ÆÊýµã£¬ÓÃÃ׳ßÁ¿³ö1¡¢2¡¢3¡¢4¡¢5µãµ½0µãµÄ¾àÀëÈçͼËùʾ£¨µ¥Î»£ºcm£©£®ÓÉÖ½´øÊý¾Ý¼ÆËã¿ÉµÃ¼ÆÊýµã4Ëù´ú±íʱ¿ÌµÄ¼´Ê±ËٶȴóСv4=
 
m/s£¬Ð¡³µµÄ¼ÓËٶȴóСa=
 
m/s2£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨2£©Èçͼ2ËùʾΪijͬѧËù°²×°µÄ¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑé×°Öã¬ÔÚͼʾ״̬Ï£¬¿ªÊ¼×öʵÑ飬¸ÃͬѧÓÐ×°ÖúͲÙ×÷ÖеÄÖ÷Òª´íÎóÊÇ¢Ù
 
¢Ú
 
¢Û
 
¢Ü
 
£®
£¨3£©ÔÚÑé֤ţ¶ÙµÚ¶þ¶¨ÂɵÄʵÑéÖУ¬µÃµ½ÁËÈçÏÂÒ»×éʵÑéÊý¾Ý£¬²¢ÔÚͼ3Ëùʾ×ø±êÖÐÒÑ»­³öa-FͼÏߣ®£º
F/N 0.196 0.294 0.392 0.490 0.588
a/m?s-2 0.25 0.38 0.90 1.20 1.53
?¢Ù´ÓͼÖпÉÒÔ·¢ÏÖʵÑé²Ù×÷ÖеÄÎÊÌâÊÇ
 
£®
?¢Ú´ÓͼÏßÖÐÇó³öϵͳµÄÖÊÁ¿ÊÇ
 
£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£© ¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸