ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçͼ.ÆäÖÐOµãÊÇÆðʼµã£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄÈý¸öµã£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµãµ½A¡¢B¡¢C¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖУ¨µ¥Î»cm£©.

       ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÖØ´¸ÖÊÁ¿Îªm£¬µ±µØÖØÁ¦¼ÓËÙ¶Èg=9.80m/s2.

   £¨1£©ÕâÈý×éÊý¾ÝÖв»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇóµÄÊÇ_______________.

   £¨2£©¸ÃͬѧÓÃÖØ´¸È¡OB¶ÎµÄÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬ÏȼÆËã³ö¸Ã¶ÎÖØ´¸ÖØÁ¦ÊÆÄܵļõСÁ¿Îª_________£¬½Ó×Å´Ó´òµã¼ÆʱÆ÷´òϵĵÚÒ»¸öµãOÊýÆð£¬Êýµ½Í¼ÖÐBµãÊÇ´òµã¼ÆʱÆ÷´òϵĵÚ9¸öµã£¬ËûÓÃvB=gt¼ÆËã¸úBµã¶ÔÓ¦µÄÎïÌåµÄ˲ʱËٶȣ¬µÃµ½¶¯ÄܵÄÔö¼ÓÁ¿Îª___________£¨¾ù±£ÁôÈýλÓÐЧÊý×Ö£©.ÕâÑùËû·¢ÏÖÖØÁ¦ÊÆÄܵļõСÁ¿__________£¨Ìî¡°´óÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¶¯ÄܵÄÔö¼ÓÁ¿£¬Ôì³ÉÕâÒ»´íÎóµÄÔ­ÒòÊÇ____________.

£¨1£©OC  £¨2£©1.22m   1.23m  £¨3·Ö£© СÓÚ   ʵ¼Ê²âµÃµÄ¸ß¶È±È×ÔÓÉÂäÌå¶ÔÓ¦ÏÂÂäµÄ¸ß¶ÈС


½âÎö:

£¨1£©´ÓÓÐЧÊý×ÖµÄλÊýÉϲ»ÄÑÑ¡³öOC²»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇ󣻣¨2£©ÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª1.22m£¬BµãµÄ˲ʱËÙ¶ÈÊÇACÈ«³ÌµÄƽ¾ùËٶȣ¬¿ÉÒÔÇó³ö¶¯ÄܵÄÔöÁ¿Îª=1.23m£»ÊµÑé¹ý³ÌÖÐÓÉÓÚ´æÔÚ×èÁ¦ÒòËØ£¬Êµ¼ÊÉÏÓ¦ÊÇÖØÁ¦ÊÆÄܵļõÉÙÁ¿ÂÔ´óÓÚ¶¯ÄܵÄÔö¼ÓÁ¿£¬Ö®ËùÒÔ³öÏÖÕâÖÖ¿ÉÄÜ£¬¿ÉÄÜÊÇʵ¼Ê²âµÃµÄ¸ß¶È±È×ÔÓÉÂäÌå¶ÔÓ¦µÄ¸ß¶ÈС.

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑéÖУ¬ÒÑÖª´òµã¼ÆʱÆ÷´òµãʱ¼ä¼ä¸ôΪT£¬²éµÃµ±µØÖØÁ¦¼ÓËÙ¶Èg£¬²â³öËùÓÃÖØÎïµÄÖÊÁ¿m£¬ÊµÑéÖеõ½Ò»Ìõµã¼£ÇåÎúµÄÖ½´ø£¬OΪÖØÎ↑ʼÏÂÂäʱ¼Ç¼µÄµã£¬ÁíÑ¡Á¬ÐøµÄ4¸öµãA¡¢B¡¢C¡¢D×÷Ϊ²âÁ¿µã£¬¾­²âÁ¿ÖªµÀA¡¢B¡¢C¡¢Èýµãµ½DµãµÄ¾àÀë·Ö±ðΪx1¡¢x2¡¢x3£¬¸ù¾ÝÒÔÉÏÊý¾Ý¿ÉÖª£¬´òµã¼ÆʱÆ÷´òCµãʱÖØÎïµÄ¶¯ÄÜΪ
m
x
2
2
8T2
m
x
2
2
8T2
£¬´ÓAµãµ½CµãÖØÎïµÄÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª
mg£¨x1-x3£©
mg£¨x1-x3£©
£®£¨ÓÃm¡¢g¡¢x1¡¢x2¡¢x3µÈÁ¿±íʾ£© 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçͼ£®ÆäÖÐOµãÊÇÆðʼµã£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄÈý¸öµã£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµãµ½A¡¢B¡¢C¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖУ¨µ¥Î»cm£©£®ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÖØ´¸ÖÊÁ¿Îªm£¬µ±µØÖØÁ¦¼ÓËÙ¶Èg=9.80m/s2£®

£¨1£©ÕâÈý×éÊý¾ÝÖв»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇóµÄÊÇ
OC
OC
£®
£¨2£©¸ÃͬѧÓÃÖØ´¸È¡OB¶ÎµÄÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬ÏȼÆËã³ö¸Ã¶ÎÖØ´¸ÖØÁ¦ÊÆÄܵļõСÁ¿Îª
1.22m
1.22m
£¬´òµã¼ÆʱÆ÷´òϵĵÚÒ»¸öµãÊÇO£¬¼ÆËã¸úBµã¶ÔÓ¦µÄÎïÌåµÄ˲ʱËٶȣ¬µÃµ½¶¯ÄܵÄÔö¼ÓÁ¿Îª
1.20m
1.20m
£¨¾ù±£ÁôÈýλÓÐЧÊý×Ö£©£®ÕâÑùËû·¢ÏÖÖØÁ¦ÊÆÄܵļõСÁ¿
´óÓÚ
´óÓÚ
£¨Ìî¡°´óÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¶¯ÄܵÄÔö¼ÓÁ¿£¬Ôì³ÉÕâÒ»Îó²îµÄÔ­ÒòÊÇ
Ö½´øÓë´òµã¼ÆʱÆ÷Ö®¼äÓÐĦ²Áʹ»úеÓÐÉÙÁ¿µÄËðʧ
Ö½´øÓë´òµã¼ÆʱÆ÷Ö®¼äÓÐĦ²Áʹ»úеÓÐÉÙÁ¿µÄËðʧ
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈç²âͼ4-6£®ÆäÖÐOµãÊÇÆðʼµã£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄÈý¸öµã£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµãµ½A¡¢B¡¢C¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖУ¨µ¥Î»cm£©£®ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÖØ´¸ÖÊÁ¿Îªm=2kg£¬µ±µØÖØÁ¦¼ÓËÙ¶Èg=9.80m/s2

£¨1£©Óù«Ê½mv2/2=mghʱ£¬¶ÔÖ½´øÉÏÆðʼµãµÄÒªÇóÊÇ
Ö½´øµÄµÚÒ»¸öµãOΪֽ´øµÄÆðʼµã
Ö½´øµÄµÚÒ»¸öµãOΪֽ´øµÄÆðʼµã
£¬Îª´ËÄ¿µÄ£¬ËùÑ¡ÔñµÄÖ½´øÒ»¡¢¶þÁ½µã¼ä¾àÓ¦½Ó½ü
2
2
£®mm
£¨2£©¸ù¾ÝÉÏͼËùµÃÊý¾Ý£¬È¡Oµãµ½BµãµÄÔ˶¯¹ý³ÌÀ´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬¸Ã¶Î¹ý³ÌÖØ´¸ÖØÁ¦ÊÆÄܵļõСÁ¿Îª
2.43
2.43
J£¬ÎïÌå´ÓOµãµ½Bµã¹ý³Ì¶¯ÄܵÄÔö¼ÓÁ¿Îª
2.40
2.40
J£¨¾ù±£ÁôÈýλÓÐЧÊý×Ö£©£®ÕâÑùËû·¢ÏÖÖØÁ¦ÊÆÄܵļõСÁ¿
´óÓÚ
´óÓÚ
£¨Ìî¡°´óÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¶¯ÄܵÄÔö¼ÓÁ¿£¬Ôì³ÉÕâÒ»Îó²îµÄÔ­ÒòÊÇ
ÖØ´¸À­×ÅÖ½´øÂäÏÂʱÊܵ½ÁË×èÁ¦
ÖØ´¸À­×ÅÖ½´øÂäÏÂʱÊܵ½ÁË×èÁ¦
£®
£¨3£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËٶȦԣ¬Á¿³öÏÂÂä¾àÀëh£¬ÔòÒÔV2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÈçÏÂͼÖеÄ
C
C
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçͼ3.ÆäÖÐOÊÇÆðʼµã£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄÈý¸öµã£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµ½A¡¢B¡¢C¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖУ¨µ¥Î»cm£©.?

ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50 Hz£¬ÖØ´¸ÖÊÁ¿Îªm£¬µ±µØÖØÁ¦¼ÓËÙ¶Èg=9.80 m/s2.?

ͼ3

£¨1£©ÕâÈý¸öÊý¾ÝÖв»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇóµÄÊÇ_______.?

£¨2£©¸ÃͬѧÓÃÖØ´¸È¡OB¶ÎµÄÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬ÏȼÆËã³ö¸Ã¶ÎÖØ´¸ÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª_______£¬½Ó×Å´Ó´òµã¼ÆʱÆ÷´òϵĵÚÒ»¸öµãOÊýÆð£¬Êýµ½Í¼ÖÐBµãÊÇ´òµã¼ÆʱÆ÷´òϵĵھŸöµã£¬ËûÓÃvb=gt¼ÆËã¸úBµã¶ÔÓ¦µÄÎïÌåµÄ˲ʱËٶȣ¬µÃµ½¶¯ÄܵÄÔö¼ÓÁ¿Îª_______£¨¾ù±£ÁôÈýλÓÐЧÊý×Ö£©.ÕâÑùËû·¢ÏÖÖØÁ¦ÊÆÄܵļõÉÙÁ¿_______£¨Ìî¡°´óÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¶¯ÄܵÄÔö¼ÓÁ¿£¬Ôì³ÉÕâÒ»´íÎóµÄÔ­ÒòÊÇ_________________.?

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011-2012ѧÄ긣½¨Ê¡ÏÃÃÅÊиßÈýÄê12ÔÂÔ¿¼ÊÔ¾íÎïÀíÊÔ¾í ÌâÐÍ£ºÊµÑéÌâ

£¨12·Ö£©ÔÚÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçͼËùʾ£®ÆäÖÐOµãÊÇÆðʼµã£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄÈý¸öµã£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµãµ½A¡¢B¡¢C¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖУ¨µ¥Î»cm£©£®ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÖØ´¸ÖÊÁ¿Îªm=2kg£¬µ±µØÖØÁ¦¼ÓËÙ¶Èg=9£®80m/s2£®

 

 

£¨1£©Óù«Ê½mv2/2=mghʱ£¬¶ÔÖ½´øÉÏÆðʼµãµÄÒªÇóÊÇ                              £¬Îª´ËÄ¿µÄ£¬ËùÑ¡ÔñµÄÖ½´øÒ»¡¢¶þÁ½µã¼ä¾àÓ¦½Ó½ü          mm

£¨2£©¸ù¾ÝÉÏͼËùµÃÊý¾Ý£¬È¡Oµãµ½BµãµÄÔ˶¯¹ý³ÌÀ´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬¸Ã¶Î¹ý³ÌÖØ´¸ÖØÁ¦ÊÆÄܵļõСÁ¿Îª_________J£¬ÎïÌå´ÓOµãµ½Bµã¹ý³Ì¶¯ÄܵÄÔö¼ÓÁ¿Îª__________J£¨¾ù±£ÁôÈýλÓÐЧÊý×Ö£©£®ÕâÑùËû·¢ÏÖÖØÁ¦ÊÆÄܵļõСÁ¿__________£¨Ìî¡°´óÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¶¯ÄܵÄÔö¼ÓÁ¿£¬Ôì³ÉÕâÒ»Îó²îµÄÔ­ÒòÊÇ______________________________________£®

(3)¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËٶȦԣ¬Á¿³öÏÂÂä¾àÀëh,ÔòÒÔV2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÈçÏÂͼÖеĠ           .

 

 

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸