ͼ5-3-1
£¨1£©ÕâÎå¸öÊý¾ÝÖв»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇóµÄÊÇ_________£¨ÌîA¡¢B¡¢C¡¢D»òE£©µã¶ÁÊý.
£¨2£©¸ÃͬѧÓÃÖØ´¸ÔÚOC¶ÎµÄÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㣬OC¾àÀëÓÃhÀ´±íʾ£¬ËûÓÃvc=¼ÆËãÓëCµã¶ÔÓ¦µÄÎïÌåµÄ¼´Ê±Ëٶȣ¬µÃµ½¶¯ÄܵÄÔö¼ÓÁ¿£¬ÕâÖÖ×ö·¨_________£¨Ìî¶Ô»ò²»¶Ô£©.ÕýÈ·¼ÆË㹫ʽvc=_________.£¨ÓÃÌâÖÐ×Öĸ±íʾ£©
£¨3£©ÈçOµãµ½Ä³¼ÆÊýµã¾àÀëÓÃh±íʾ£¬ÖØÁ¦¼ÓËÙ¶ÈΪg£¬¸Ãµã¶ÔÓ¦ÖØ´¸µÄ˲ʱËÙ¶ÈΪv£¬ÔòʵÑéÖÐÒªÑéÖ¤µÄµÈʽΪ_________.
£¨4£©ÈôÖØ´¸ÖÊÁ¿m=2.00¡Á10-1 kg£¬ÖØÁ¦¼ÓËÙ¶Èg=9.80 m/s2£¬ÓÉͼÖиø³öµÄÊý¾Ý£¬¿ÉµÃ³ö´ÓOµ½´òÏÂDµã£¬ÖØ´¸ÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª_________J£¬¶ø¶¯ÄܵÄÔö¼ÓÁ¿Îª_________J£¬£¨¾ù±£Áô3λÓÐЧÊý×Ö£©
½âÎö£º£¨1£©ºÁÃ׿̶ȳߵÄ×îС¿Ì¶ÈΪ1 mm£¬¼´¾«È·¶ÈΪ1 mm£¬²âÁ¿¾àÀë¶ÁÊýʱ£¬Ó¦¹À¶Áµ½ºÁÃ×µÄÊ®·Ö룬Êý¾Ý12.4 cm²»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇó.
£¨2£©ÊµÑéÖУ¬Ö½´ø²»¿É±ÜÃâµÄÒªÊܵ½ÏÞλ¿×¡¢ÕñÕë¡¢¿ÕÆøµÄ×èÁ¦Ó°Ï죬ÖØ´¸Ò²ÄÑÃâÊܵ½¿ÕÆøµÄ×èÁ¦×÷Óã¬Òò´Ë£¬ÑϸñµÄ˵ÖØ´¸µÄÔ˶¯²»ÊÇ×ÔÓÉÂäÌåÔ˶¯£¬¶øÊǼÓËÙ¶ÈСÓÚgµÄÔȱäËÙÖ±ÏßÔ˶¯.ËùÒÔÓÃvc=ÇóvcµÄ×ö·¨²»¶Ô.
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÌص㡪¡ªÎïÌåÔÚij¶Îʱ¼äÄÚµÄƽ¾ùËٶȵÈÓÚÕâ¶Îʱ¼äµÄÖмäʱ¿ÌµÄ˲ʱËٶȣ¬¿ÉÖªvc=.
£¨3£©¸ù¾ÝÌâÒ⣬ÓëÖ½´øÉÏOµã¶ÔÓ¦µÄÊÇÖØ´¸×Ô¾²Ö¹¿ªÊ¼Ï½µÊ±µÄλÖã¬ÆäÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îªmgh£¬¶¯ÄܵÄÔö¼ÓÁ¿Îªmv2£¬Ö»Òªmgh=mv2»ògh=³ÉÁ¢£¬¼´±íÃ÷»úеÄÜÊغ㶨ÂɵÄÕýÈ·ÐÔ.
£¨4£©¸ù¾Ý£¨2£©Öй«Ê½¿ÉµÃ£¬vD=£¬¶¯ÄÜÔö¼ÓÁ¿¦¤Ek=mv2D£¬ÈÈÄܵļõÉÙÁ¿¦¤Ep=mg|OD|£¬´úÈëÊý¾ÝµÃ£¬¦¤Ek=0.376 J ¦¤Ep=0.380 J.
´ð°¸£º£¨1£©B £¨2£©²»¶Ô£¬
£¨3£©gh= £¨4£©3.80 J£¬3.76 J
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
2gh |
1 |
2 |
1 |
2 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
2gh |
(OD-OB)f |
2 |
(OD-OB)f |
2 |
v2 |
2 |
v2 |
2 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
2gh |
| ||||
2 |
| ||||
2 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012-2013ѧÄê±±¾©Êж«³ÇÇøÆÕͨУ¸ßÈý11ÔÂÁª¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÊµÑéÌâ
ÔÚÓÃÖØ´¸ÏÂÂäÀ´ÑéÖ¤»úеÄÜÊغãʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçÏÂͼËùʾ£®ÆäÖÐOÊÇÆðʼµã£¬A¡¢B¡¢C¡¢D¡¢EÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄ5¸öµã£¬´òµãƵÂÊΪ50Hz¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµ½A¡¢B¡¢C¡¢D¡¢E¸÷µãµÄ¾àÀ룬²¢¼Ç¼ÔÚͼÖÐ(µ¥Î»£ºcm)?
?
£¨1£©ÕâÎå¸öÊý¾ÝÖв»·ûºÏÓÐЧÊý×Ö¶ÁÊýÒªÇóµÄÊÇ¡¡ ¡¡µã¶ÁÊý¡£?(ÌîA¡¢B¡¢C¡¢D»òE)
£¨2£©ÊµÑéʱ£¬ÔÚÊÍ·ÅÖØ´¸¡¡¡¡¡¡¡¡£¨Ñ¡Ì֮ǰ¡±»ò¡°Ö®ºó¡±£©½Óͨ´òµã¼ÆʱÆ÷µÄµçÔ´£¬ÔÚÖ½´øÉÏ´ò³öһϵÁеĵ㡣
£¨3£©¸ÃʵÑéÖУ¬ÎªÁËÇóÁ½µãÖ®¼äÖØ´¸µÄÖØÁ¦ÊÆÄܱ仯£¬ÐèÒªÖªµÀÖØÁ¦¼ÓËÙ¶ÈgµÄÖµ£¬Õâ¸ögÖµÓ¦¸ÃÊÇ£º
A£®È¡µ±µØµÄʵ¼ÊgÖµ£»? B£®¸ù¾Ý´ò³öµÄÖ½´ø£¬Óæ¤s£½gT2Çó³ö£»
C£®½üËÆÈ¡10m/s2¼´¿É£» D£®ÒÔÉÏ˵·¨¶¼²»¶Ô¡£
£¨4£©ÈçOµãµ½Ä³¼ÆʱµãµÄ¾àÀëÓÃh±íʾ£¬ÖØÁ¦¼ÓËÙ¶ÈΪg£¬¸Ãµã¶ÔÓ¦ÖØ´¸µÄ˲ʱËÙ¶ÈΪv£¬ÔòʵÑéÖÐÒªÑéÖ¤µÄµÈʽΪ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡£
£¨5£©ÈôÖØ´¸ÖÊÁ¿m=2.00¡Ákg£¬ÖØÁ¦¼ÓËÙ¶Èg=9.80m/£¬ÓÉͼÖиø³öµÄÊý¾Ý£¬¿ÉµÃ³ö´ÓOµ½´òÏÂDµã£¬ÖØ´¸ÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª J£¬¶ø¶¯ÄܵÄÔö¼ÓÁ¿Îª J(¾ù±£Áô3λÓÐЧÊý×Ö)¡£?
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com