£¨8·Ö£©£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéÖУ¬ºÏÁ¦Óë·ÖÁ¦µÄ×÷ÓÃЧ¹ûÏàͬ£¬ÕâÀïµÄ×÷ÓÃЧ¹ûÊÇÖ¸£¨   £©

A£®µ¯»É²âÁ¦¼ÆµÄµ¯»É±»À­³¤       B£®¹Ì¶¨ÏðƤÌõµÄͼ¶¤ÊÜÀ­Á¦²úÉúÐαä

C£®Ï¸ÉþÌ×ÊÜÀ­Á¦²úÉúÐα䠠       D£®Ê¹ÏðƤÌõÔÚijһ·½ÏòÉ쳤µ½Ä³Ò»³¤¶È

£¨2£©ÏÂÁйØÓÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéµÄ˵·¨ÖУ¬²»ÕýÈ·µÄÊÇ£¨   £©

A£®À­ÏðƤÌõµÄϸÉþÌ×ϸһЩÇÒ³¤Ò»Ð©£¬ÊµÑéЧ¹û½ÏºÃ

B£®·ÖÁ¦F1 ¡¢F2µÄ¼Ð½Ç¾¡Á¿´óЩºÃ

C£®À­ÏðƤÌõʱ£¬ÏðƤÌõ¡¢Ï¸ÉþºÍµ¯»É³ÓÓ¦Ìù½üÇÒƽÐÐÓëľ°å

D£®ÏðƤÌõµ¯ÐÔÒªºÃ£¬À­µ½Oµãʱ£¬À­Á¦ÒªÊʵ±´óЩ

 

£¨1£©D  £¨2£©B

½âÎö:

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐη¨Ôò¡±ÊµÑéÖУ¬Ä³Í¬Ñ§µÄʵÑé½á¹ûÈçͼ1£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤÌõµÄͼ¶¤£¬OΪÏðƤÌõÓëϸÉþ½áµãµÄλÖã®Í¼ÖÐ
F
F
ÊÇF1ÓëF2ºÏÁ¦µÄÀíÂÛÖµ£»
F¡ä
F¡ä
ÊÇÁ¦F1ÓëF2ºÏÁ¦µÄʵÑéÖµ£®
£¨2£©ÔÚÑо¿Æ½Å×ÎïÌåÔ˶¯µÄʵÑéÖУ¬ÓÃÒ»ÕÅÓ¡ÓÐС·½¸ñµÄÖ½¼Ç¼¹ì¼££¬Ð¡·½¸ñµÄ±ß³¤L=2.5cm£®ÈôСÇòÔÚƽÅ×Ô˶¯Í¾Öеļ¸¸öλÖÃÈçͼ2ÖеÄa¡¢b¡¢c¡¢dËùʾ£¬ÔòСÇòƽÅ׵ijõËٶȵļÆËãʽΪv0=
2
Lg
2
Lg
£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ
1.0m/s
1.0m/s
£¬Ð¡Çò¾­¹ýbËٶȵļÆËãʽΪvb=
5
2
gL
5
2
gL
£¬£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ
1.25m/s
1.25m/s

£¨3£©Èçͼ3Ëùʾ£¬Ä³Í¬Ñ§ÔÚ×ö¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±ÊµÑéÖУ¬ÓÉ´òµã¼ÆʱÆ÷µÃµ½±íʾС³µÔ˶¯¹ý³ÌµÄÒ»ÌõÇåÎúÖ½´ø£¬Ö½´øÉÏÁ½ÏàÁÚ¼ÆÊýµãµÄʱ¼ä¼ä¸ôΪT=0.10s£¬ÆäÖÐS1=7.05cm¡¢S2=7.68cm¡¢S3=8.33cm¡¢S4=8.95cm¡¢S5=9.61cm¡¢S6=10.26cm£¬ÔòAµã´¦Ë²Ê±ËٶȵĴóСÊÇ
0.86
0.86
m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËٶȼÆËã±í´ïʽΪ
a=
(S4+S5+S6)-(S3+S2+S1)
9T2
a=
(S4+S5+S6)-(S3+S2+S1)
9T2
£¬¼ÓËٶȵĴóСÊÇ
0.64
0.64
m/s2£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéÖÐijͬѧµÄʵÑéÇé¿öÈçÏÂ1Ëùʾ£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤ½îµÄͼ¶¤£¬OΪÏðƤ½îÓëϸÉþµÄ½áµã£¬OBºÍOCΪϸÉþ£¬Í¼2ÊÇÔÚ°×Ö½Éϸù¾ÝʵÑé½á¹û»­³öµÄͼ£®
¢Ùͼ2ÖеÄ
F
F
ÊÇÁ¦F1ºÍF2µÄºÏÁ¦µÄÀíÂÛÖµ£¬
F¡ä
F¡ä
ÊÇÁ¦F1ºÍF2µÄºÏÁ¦µÄʵ¼Ê²âÁ¿Öµ£®
¢ÚÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ
CD
CD
£®
A£®Á½¸ùϸÉþ±ØÐëµÈ³¤
B£®Á½·ÖÁ¦F1ºÍF2Ó¦´¹Ö±£¬ÕâÑù±ãÓÚ׼ȷËã³öºÏÁ¦
C£®Í¬Ò»´ÎʵÑéÓ¦½«ÏðƤÌõºÍϸÏߵĽáµãÀ­µ½ÏàͬµÄλÖÃ
D£®±¾ÊµÑéÀûÓÃÁ˵ÈЧÌæ´úµÄ¿Æѧ·½·¨
£¨2£©Ä³Í¬Ñ§Óôòµã¼ÆʱÆ÷²âÁ¿×öÔȼÓËÙÖ±ÏßÔ˶¯µÄÎïÌåµÄ¼ÓËٶȣ¬µçԴƵÂÊf=50Hz£®ÔÚÖ½´øÉÏ´ò³öµÄµãÖУ¬Ñ¡³öÁãµã£¬Ã¿¸ô4¸öµãÈ¡1¸ö¼ÆÊýµã£®Òò±£´æ²»µ±£¬Ö½´ø±»ÎÛȾ£¬Èçͼ3Ëùʾ£¬A¡¢B¡¢C¡¢DÊÇÒÀ´ÎÅÅÁеÄ4¸ö¼ÆÊýµã£¬½öÄܶÁ³öÆäÖÐ3¸ö¼ÆÊýµãµ½ÁãµãµÄ¾àÀ룺sA=16.6mm¡¢sB=126.5mm¡¢sD=624.5mm£®ÈôÎÞ·¨ÔÙ×öʵÑ飬¿ÉÓÉÒÔÉÏÐÅÏ¢ÍÆÖª
¢ÙÏàÁÚÁ½¼ÆÊýµãµÄʱ¼ä¼ä¸ôΪ
0.1
0.1
s£»
¢Ú´òCµãʱÎïÌåµÄËٶȴóСΪ
2.5
2.5
m/s£¨È¡2λÓÐЧÊý×Ö£©£»
¢ÛÎïÌåµÄ¼ÓËٶȴóСΪ
sD-3sB+2sA
75
f2
sD-3sB+2sA
75
f2
£¨ÓÃsA¡¢sB¡¢sDºÍf±íʾ£©£®
£¨3£©Ä³Í¬Ñ§²ÉÓð뾶R=25cmµÄ1/4Ô²»¡¹ìµÀ×öƽÅ×Ô˶¯ÊµÑ飬Æ䲿·ÖʵÑé×°ÖÃʾÒâͼÈçͼ43Ëùʾ£®ÊµÑéÖУ¬Í¨¹ýµ÷Õûʹ³ö¿ÚÄ©¶ËBµÄÇÐÏßˮƽºó£¬ÈÃСÇò´ÓÔ²»¡¶¥¶ËµÄAµãÓɾ²Ö¹ÊÍ·Å£®Í¼5ÊÇСÇò×öƽÅ×Ô˶¯µÄÉÁ¹âÕÕƬ£¬ÕÕƬÖеÄÿ¸öÕý·½ÐÎС·½¸ñµÄ±ß³¤´ú±íµÄʵ¼Ê³¤¶ÈΪ4.85cm£®ÒÑÖªÉÁ¹âƵÂÊÊÇ10Hz£®Ôò¸ù¾ÝÉÏÊöÐÅÏ¢¿ÉÖª£º
¢ÙСÇòµ½´ï¹ìµÀ×îµÍµãBµÄËٶȴóС
vB=
1.94
1.94
m/s£¬Ð¡ÇòÔÚDµÄÊúÖ±ËٶȴóСvDy=
1.94
1.94
m/s£¬µ±µØµÄÖØÁ¦¼ÓËÙ¶Èg=
9.7
9.7
m/s2£»
¢ÚСÇòÔÚÔ²»¡²ÛÉÏÊÇ·ñÊܵ½ÁËĦ²ÁÁ¦£º
Êܵ½
Êܵ½
£¨Ìî¡°Êܵ½¡±¡¢¡°Î´Êܵ½¡±¡¢¡°Ìõ¼þ²»×㣬ÎÞ·¨È·¶¨¡±£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐη¨Ôò¡±ÊµÑéÖУ¬Ä³Í¬Ñ§µÄʵÑé½á¹ûÈçͼ1£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤÌõµÄͼ¶¤£¬OΪÏðƤÌõÓëϸÉþ½áµãµÄλÖã®Í¼ÖÐ______ÊÇF1ÓëF2ºÏÁ¦µÄÀíÂÛÖµ£»______ÊÇÁ¦F1ÓëF2ºÏÁ¦µÄʵÑéÖµ£®
£¨2£©ÔÚÑо¿Æ½Å×ÎïÌåÔ˶¯µÄʵÑéÖУ¬ÓÃÒ»ÕÅÓ¡ÓÐС·½¸ñµÄÖ½¼Ç¼¹ì¼££¬Ð¡·½¸ñµÄ±ß³¤L=2.5cm£®ÈôСÇòÔÚƽÅ×Ô˶¯Í¾Öеļ¸¸öλÖÃÈçͼ2ÖеÄa¡¢b¡¢c¡¢dËùʾ£¬ÔòСÇòƽÅ׵ijõËٶȵļÆËãʽΪv0=______£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ______£¬Ð¡Çò¾­¹ýbËٶȵļÆËãʽΪvb=______£¬£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ______
£¨3£©Èçͼ3Ëùʾ£¬Ä³Í¬Ñ§ÔÚ×ö¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±ÊµÑéÖУ¬ÓÉ´òµã¼ÆʱÆ÷µÃµ½±íʾС³µÔ˶¯¹ý³ÌµÄÒ»ÌõÇåÎúÖ½´ø£¬Ö½´øÉÏÁ½ÏàÁÚ¼ÆÊýµãµÄʱ¼ä¼ä¸ôΪT=0.10s£¬ÆäÖÐS1=7.05cm¡¢S2=7.68cm¡¢S3=8.33cm¡¢S4=8.95cm¡¢S5=9.61cm¡¢S6=10.26cm£¬ÔòAµã´¦Ë²Ê±ËٶȵĴóСÊÇ______m/s£¬Ð¡³µÔ˶¯µÄ¼ÓËٶȼÆËã±í´ïʽΪ______£¬¼ÓËٶȵĴóСÊÇ______m/s2£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011-2012ѧÄêÖØÇìÊоÅÁúÆÂÇøÑî¼ÒƺÖÐѧ¸ßÈý£¨ÉÏ£©ÆÚÖÐÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐη¨Ôò¡±ÊµÑéÖУ¬Ä³Í¬Ñ§µÄʵÑé½á¹ûÈçͼ1£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤÌõµÄͼ¶¤£¬OΪÏðƤÌõÓëϸÉþ½áµãµÄλÖã®Í¼ÖÐ______ÊÇF1ÓëF2ºÏÁ¦µÄÀíÂÛÖµ£»______ÊÇÁ¦F1ÓëF2ºÏÁ¦µÄʵÑéÖµ£®
£¨2£©ÔÚÑо¿Æ½Å×ÎïÌåÔ˶¯µÄʵÑéÖУ¬ÓÃÒ»ÕÅÓ¡ÓÐС·½¸ñµÄÖ½¼Ç¼¹ì¼££¬Ð¡·½¸ñµÄ±ß³¤L=2.5cm£®ÈôСÇòÔÚƽÅ×Ô˶¯Í¾Öеļ¸¸öλÖÃÈçͼ2ÖеÄa¡¢b¡¢c¡¢dËùʾ£¬ÔòСÇòƽÅ׵ijõËٶȵļÆËãʽΪv=______

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012ÄêËÄ´¨Ê¡³É¶¼ÊÐнòÏØ»ªÈóÖÐѧ¸ß¿¼ÎïÀíÄ£ÄâÊÔ¾í£¨Ò»£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

£¨1£©ÔÚ¡°ÑéÖ¤Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéÖÐijͬѧµÄʵÑéÇé¿öÈçÏÂ1Ëùʾ£¬ÆäÖÐAΪ¹Ì¶¨ÏðƤ½îµÄͼ¶¤£¬OΪÏðƤ½îÓëϸÉþµÄ½áµã£¬OBºÍOCΪϸÉþ£¬Í¼2ÊÇÔÚ°×Ö½Éϸù¾ÝʵÑé½á¹û»­³öµÄͼ£®
¢Ùͼ2ÖеÄ______ÊÇÁ¦F1ºÍF2µÄºÏÁ¦µÄÀíÂÛÖµ£¬______ÊÇÁ¦F1ºÍF2µÄºÏÁ¦µÄʵ¼Ê²âÁ¿Öµ£®
¢ÚÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ______£®
A£®Á½¸ùϸÉþ±ØÐëµÈ³¤
B£®Á½·ÖÁ¦F1ºÍF2Ó¦´¹Ö±£¬ÕâÑù±ãÓÚ׼ȷËã³öºÏÁ¦
C£®Í¬Ò»´ÎʵÑéÓ¦½«ÏðƤÌõºÍϸÏߵĽáµãÀ­µ½ÏàͬµÄλÖÃ
D£®±¾ÊµÑéÀûÓÃÁ˵ÈЧÌæ´úµÄ¿Æѧ·½·¨
£¨2£©Ä³Í¬Ñ§Óôòµã¼ÆʱÆ÷²âÁ¿×öÔȼÓËÙÖ±ÏßÔ˶¯µÄÎïÌåµÄ¼ÓËٶȣ¬µçԴƵÂÊf=50Hz£®ÔÚÖ½´øÉÏ´ò³öµÄµãÖУ¬Ñ¡³öÁãµã£¬Ã¿¸ô4¸öµãÈ¡1¸ö¼ÆÊýµã£®Òò±£´æ²»µ±£¬Ö½´ø±»ÎÛȾ£¬Èçͼ3Ëùʾ£¬A¡¢B¡¢C¡¢DÊÇÒÀ´ÎÅÅÁеÄ4¸ö¼ÆÊýµã£¬½öÄܶÁ³öÆäÖÐ3¸ö¼ÆÊýµãµ½ÁãµãµÄ¾àÀ룺sA=16.6mm¡¢sB=126.5mm¡¢sD=624.5mm£®ÈôÎÞ·¨ÔÙ×öʵÑ飬¿ÉÓÉÒÔÉÏÐÅÏ¢ÍÆÖª
¢ÙÏàÁÚÁ½¼ÆÊýµãµÄʱ¼ä¼ä¸ôΪ______s£»
¢Ú´òCµãʱÎïÌåµÄËٶȴóСΪ______m/s£¨È¡2λÓÐЧÊý×Ö£©£»
¢ÛÎïÌåµÄ¼ÓËٶȴóСΪ______£¨ÓÃsA¡¢sB¡¢sDºÍf±íʾ£©£®
£¨3£©Ä³Í¬Ñ§²ÉÓð뾶R=25cmµÄ1/4Ô²»¡¹ìµÀ×öƽÅ×Ô˶¯ÊµÑ飬Æ䲿·ÖʵÑé×°ÖÃʾÒâͼÈçͼ43Ëùʾ£®ÊµÑéÖУ¬Í¨¹ýµ÷Õûʹ³ö¿ÚÄ©¶ËBµÄÇÐÏßˮƽºó£¬ÈÃСÇò´ÓÔ²»¡¶¥¶ËµÄAµãÓɾ²Ö¹ÊÍ·Å£®Í¼5ÊÇСÇò×öƽÅ×Ô˶¯µÄÉÁ¹âÕÕƬ£¬ÕÕƬÖеÄÿ¸öÕý·½ÐÎС·½¸ñµÄ±ß³¤´ú±íµÄʵ¼Ê³¤¶ÈΪ4.85cm£®ÒÑÖªÉÁ¹âƵÂÊÊÇ10Hz£®Ôò¸ù¾ÝÉÏÊöÐÅÏ¢¿ÉÖª£º
¢ÙСÇòµ½´ï¹ìµÀ×îµÍµãBµÄËٶȴóС
vB=______m/s£¬Ð¡ÇòÔÚDµÄÊúÖ±ËٶȴóСvDy=______m/s£¬µ±µØµÄÖØÁ¦¼ÓËÙ¶Èg=______m/s2£»
¢ÚСÇòÔÚÔ²»¡²ÛÉÏÊÇ·ñÊܵ½ÁËĦ²ÁÁ¦£º______£¨Ìî¡°Êܵ½¡±¡¢¡°Î´Êܵ½¡±¡¢¡°Ìõ¼þ²»×㣬ÎÞ·¨È·¶¨¡±£©£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸