·ÖÎö ÓÉÓÚÕÚ¹âÌõͨ¹ý¹âµçÃŵÄʱ¼ä¼«¶Ì£¬¿ÉÒÔÓÃƽ¾ùËٶȱíʾ˲ʱËٶȣ®¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄËÙ¶ÈλÒƹ«Ê½Çó³ö»¬¿éµÄ¼ÓËٶȣ®
¸ù¾Ý¹¦ÄܹØϵµÃÖØÁ¦×ö¹¦µÄÊýÖµµÈÓÚÖØÁ¦ÊÆÄܼõСÁ¿£®Òª×¢Òâ±¾ÌâµÄÑо¿¶ÔÏóÊÇϵͳ£®
½â´ð ½â£º£¨1£©ÓÉÓÚÕÚ¹âÌõͨ¹ý¹âµçÃŵÄʱ¼ä¼«¶Ì£¬¿ÉÒÔÓÃƽ¾ùËٶȱíʾ˲ʱËٶȣ®
»¬¿é¾¹ý¹âµçÃÅ1ʱµÄ˲ʱËٶȵıí´ïʽv1=$\frac{d}{{t}_{1}}$£¬
»¬¿é¾¹ý¹âµçÃÅ2ʱµÄ˲ʱËٶȵıí´ïʽv2=$\frac{d}{{t}_{2}}$£®
¸ù¾Ý${v}_{2}^{2}$-${v}_{1}^{2}$=2aLµÃ£¬
a=$\frac{{d}^{2}}{2L}$£¨$\frac{1}{{t}_{2}^{2}}$-$\frac{1}{{t}_{1}^{2}}$£©
£¨2£©ÏµÍ³µÄ×ܶ¯Äܱ仯·Ö±ðΪ£º$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{2}}$£©2-$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{1}}$£©2£»
ÔÚ»¬¿é´Ó¹âµçÃÅ1Ô˶¯µ½¹âµçÃÅ2µÄ¹ý³ÌÖУ¬ÏµÍ³ÊÆÄܵļõÉÙ¡÷Ep=mgL
Èç¹ûÂú×ã¹Øϵʽ¡÷Ep=Ek2-Ek1£¬¼´ÏµÍ³ÖØÁ¦ÊÆÄܼõСÁ¿µÈÓÚ¶¯ÄÜÔö¼ÓÁ¿£¬Ôò¿ÉÈÏΪÑéÖ¤ÁË»úеÄÜÊغ㶨ÂÉ£®
ËùÒÔ±¾ÊµÑ黹ÐèÒªÓÃÒÇÆ÷²âÁ¿µÄÎïÀíÁ¿ÊÇ»¬¿éºÍµ²¹âÌõµÄ×ÜÖÊÁ¿M¡¢É³Í°µÄ×ÜÖÊÁ¿m£¬
»úеÄÜÊغãµÄ±í´ïʽ$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{2}}$£©2-$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{1}}$£©2=mgL
¹Ê´ð°¸Îª£º£¨1£©$\frac{{d}^{2}}{2L}$£¨$\frac{1}{{t}_{2}^{2}}$-$\frac{1}{{t}_{1}^{2}}$£©£»
£¨2£©»¬¿éºÍµ²¹âÌõµÄ×ÜÖÊÁ¿M¡¢É³Í°µÄÖÊÁ¿m£¬$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{2}}$£©2-$\frac{1}{2}$£¨M+m£©£¨$\frac{d}{{t}_{1}}$£©2=mgL£®
µãÆÀ ½â¾ö¸ÃÌâ¹Ø¼üÕÆÎÕÖªµÀÔÚ¼«¶Ìʱ¼äÄÚµÄƽ¾ùËٶȿÉÒÔ±íʾ˲ʱËٶȺÍÔȱäËÙÖ±ÏßÔ˶¯µÄËÙ¶ÈλÒƹ«Ê½Ó¦Óã®
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¶àÑ¡Ìâ
A£® | µÆÅݵĵ繦ÂÊΪ120W | |
B£® | ²¨ÀË·¢µç²úÉúµç¶¯ÊÆeµÄ˲¼ä±í´ïʽΪc=16sin£¨¦Ðt£©V | |
C£® | µÆÅÝÁ½¶ËµçѹµÄÓÐЧֵΪ$\frac{15\sqrt{2}}{2}$V | |
D£® | µÆÅÝÖеçÁ÷iµÄ˲ʱ±í´ïʽΪi=4sin£¨¦Ðt£©A |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | X1¡¢X2¡¢X3¡¢X4 | B£® | X2¡¢X3¡¢X4 | C£® | X3¡¢X4 | D£® | X1¡¢X3 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | t=0ʱ¿ÌÏßȦƽÃæÓëÖÐÐÔÃæÖØºÏ | B£® | t=0.01sʱ´©¹ýÏßȦµÄ´ÅͨÁ¿×îС | ||
C£® | µç¶¯ÊƵÄƵÂÊΪ0.02Hz | D£® | µç¶¯ÊƵÄÓÐЧֵΪ31IV |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | ·Ö×ÓÁ¦¼õСʱ£¬·Ö×ÓÊÆÄÜÒ²Ò»¶¨¼õС | |
B£® | Ö»ÒªÄܼõÈõ·Ö×ÓÈÈÔ˶¯µÄ¾çÁҳ̶ȣ¬ÎïÌåµÄζȾͿÉÒÔ½µµÍ | |
C£® | À©É¢ºÍ²¼ÀÊÔ˶¯µÄʵÖÊÊÇÏàͬµÄ£¬¶¼ÊÇ·Ö×ÓµÄÎÞ¹æÔòÔ˶¯ | |
D£® | ·Ö×Ó¼äµÄ¾àÀër´æÔÚijһֵr0£¬µ±r´óÓÚr0ʱ£¬·Ö×Ó¼ä³âÁ¦´óÓÚÒýÁ¦£»µ±rСÓÚr0ʱ£¬·Ö×Ó¼ä³âÁ¦Ð¡ÓÚÒýÁ¦ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ
A£® | B£® | C£® | D£® |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | ¶ÔÓÚÒ»¶¨ÖÊÁ¿µÄÀíÏëÆøÌ壬ÈôÆøÌåµÄѹǿºÍÌå»ý¶¼·¢Éú±ä»¯£¬ÆäÄÚÄÜ¿ÉÄܲ»±ä | |
B£® | ¶ÔÓÚÃÜ·âÔÚÈÝ»ý²»±äµÄÈÝÆ÷ÄÚµÄÀíÏëÆøÌ壬ÈôÆøÌåζÈÉý¸ß£¬ÔòÆøÌåÒ»¶¨´ÓÍâ½çÎüÈÈ | |
C£® | ÍÑÖ¬ÃÞÍÑÖ¬µÄÄ¿µÄ£¬ÔÚÓÚʹËü´Ó²»Äܱ»Ë®½þÈó±äΪ¿ÉÒÔ±»Ë®½þÈó£¬ÒÔ±ãÎüÈ¡Ò©Òº | |
D£® | ÒºÌå±íÃæ´æÔÚ×ÅÕÅÁ¦ÊÇÒòΪҺÌåÄÚ²¿·Ö×Ó¼äµÄ¾àÀë´óÓÚÒºÌå±íÃæ²ã·Ö×Ó¼äµÄ¾àÀë |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | Ò»¶¨²»»á²úÉúÆ«ÕñÏÖÏó | |
B£® | ´ÓÒ»¸ö·¿¼ä´©Ô½Ç½±Ú½øÈëÁíÒ»¸ö·¿¼äºó£¬ÆµÂʱ£³Ö²»±ä | |
C£® | Óë±±¶·µ¼º½Ðźŵþ¼Óʱ£¬½«²úÉúÃ÷ÏԵĸÉÉæÏÖÏó | |
D£® | Óë΢²¨Â¯ËùʹÓõÄ΢²¨Ïà±È£¬¸üÈÝÒײúÉúÃ÷ÏÔÑܵÄÉäÏÖÏó |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ
A£® | µØÃæ¶ÔÎï¿éµÄ×î´ó¾²Ä¦²ÁÁ¦Îª1N | |
B£® | 4sÄ©ÍÆÁ¦FµÄ˲ʱ¹¦ÂÊΪ36W | |
C£® | Îï¿éÓëµØÃæ¼äµÄ»¬¶¯Ä¦²ÁÒòÊýΪ0.2 | |
D£® | Îï¿éµÄÖÊÁ¿Îª2kg |
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