13£®Èçͼ¼×Ëùʾ£¬ÖÊÁ¿·Ö±ðΪm1ºÍm2µÄÎï¿éAºÍB£¬·Ö±ðϵÔÚÒ»Ìõ¿ç¹ý¶¨»¬ÂÖµÄÇáÖÊϸÉþÁ½¶Ë£¬¼ºÖªm1£¾m2£¬1¡¢2ÊÇÁ½¸ö¼Æʱ¹âµçÃÅ£¬²»¼Æ»¬ÂÖÖÊÁ¿ºÍĦ²Á£®ÓôË×°ÖÃÑéÖ¤»úеÄÜÊغ㶨ÂÉ£®
£¨1£©Îï¿éBÉϹ̶¨ÓÐÒ»¿í¶ÈΪdµÄµ²¹âÌõ£¬ÊµÑéÖмǼϵ²¹âÌõͨ¹ý1¡¢2Á½¹âµçÃÅʱµÄʱ¼ä¼ä¸ô·Ö±ðΪ¡÷t1ºÍ¡÷t2£¬´ËÍ⻹ÐèÒª²âÁ¿µÄÎïÀíÁ¿ÊÇÁ½¹âµçÃÅÖ®¼äµÄ¾àÀëh£®
£¨2£©ÓÃÒÑÖªÁ¿ºÍ²âÁ¿Á¿Ð´³öÑéÖ¤»úеÄÜÊغãµÄ±í´ïʽ£¨m1-m2£©gh=$\frac{1}{2}$£¨m1+m2£©£¨£¨$\frac{d}{¡÷{t}_{2}}$£©2-£¨$\frac{d}{¡÷{t}_{1}}$£©2£©£®
£¨3£©ÓÃÂÝÐý²â΢Æ÷²âµ²¹âÌõ¿í¶ÈdʱµÄ½á¹ûÈçͼÒÒËùʾ£¬Ôòd=2.600 mm£®

·ÖÎö £¨1£©Õâ¸öʵÑéµÄÔ­ÀíÊÇÒªÑéÖ¤mA¡¢mBµÄÔö¼ÓµÄ¶¯ÄܺÍmA¡¢mB¼õÉÙÖØÁ¦ÊÆÄÜÊDz»ÊÇÏàµÈ£¬ËùÒÔÎÒÃÇÒª²âÁ¿µÄÎïÀíÁ¿ÓУºÎï¿éµÄÖÊÁ¿mA¡¢mB£» Îï¿éAÏÂÂäµÄ¾àÀëh£¨»òÎï¿éBÉÏÉýµÄ¾àÀëh£©£®
£¨2£©Ð´³öAÓëBÖØÁ¦ÊÆÄܱ仯µÄ±í´ïʽÓëËüÃǶ¯Äܱ仯µÄ±í´ïʽ£¬ÐèÒªÑéÖ¤µÄÊÇÁ½ÕßÏàµÈ£»
£¨3£©ÂÝÐý²â΢Æ÷µÄ¶ÁÊý·½·¨Êǹ̶¨¿Ì¶È¶ÁÊý¼ÓÉϿɶ¯¿Ì¶È¶ÁÊý£¬ÔÚ¶Á¿É¶¯¿Ì¶È¶ÁÊýʱÐè¹À¶Á£®

½â´ð ½â£º£¨1£©Í¨¹ýÁ¬½ÓÔÚÒ»ÆðµÄA¡¢BÁ½ÎïÌåÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬¼´Ñé֤ϵͳµÄÊÆÄܱ仯Ó붯Äܱ仯ÊÇ·ñÏàµÈ£¬A¡¢BÁ¬½ÓÔÚÒ»Æð£¬AϽµµÄ¾àÀëÒ»¶¨µÈÓÚBÉÏÉýµÄ¾àÀ룻A¡¢BµÄËٶȴóС×ÜÊÇÏàµÈµÄ£®ÐèÒª²âÁ¿Á½¹âµçÃÅÖ®¼äµÄ¾àÀëh£®
£¨2£©AϽµhµÄͬʱ£¬BÉÏÉýh£¬ËüÃǵÄÖØÁ¦ÊÆÄܵı仯£º¡÷EP=£¨mA-mB£©gh£»
AÓëB¶¯Äܵı仯£º¡÷Ek=$\frac{1}{2}$£¨m1+m2£©£¨£¨$\frac{d}{¡÷{t}_{2}}$£©2-£¨$\frac{d}{¡÷{t}_{1}}$£©2£©
ÐèÒªÑéÖ¤µÄÊÇ£º£¨m1-m2£©gh=$\frac{1}{2}$£¨m1+m2£©£¨£¨$\frac{d}{¡÷{t}_{2}}$£©2-£¨$\frac{d}{¡÷{t}_{1}}$£©2£©
£¨3£©ÂÝÐý²â΢Æ÷µÄ¹Ì¶¨¿Ì¶ÈΪ2.5mm£¬¿É¶¯¿Ì¶ÈΪ10.0¡Á0.01mm=0.100mm£¬ËùÒÔ×îÖÕ¶ÁÊýΪ2.5mm+0.100mm=2.600mm£¬ÓÉÓÚÐèÒª¹À¶Á£¬×îºóµÄ½á¹û¿ÉÒÔÔÚ2.599-2.601Ö®¼ä£®
¹Ê´ð°¸Îª£º£¨1£©Á½¹âµçÃÅÖ®¼äµÄ¾àÀëh£»£¨2£©£¨m1-m2£©gh=$\frac{1}{2}$£¨m1+m2£©£¨£¨$\frac{d}{¡÷{t}_{2}}$£©2-£¨$\frac{d}{¡÷{t}_{1}}$£©2£©£»£¨3£©2.600£®

µãÆÀ ´ËÌâΪһÑéÖ¤ÐÔʵÑéÌ⣮ҪÇó¸ù¾ÝÎïÀí¹æÂÉÑ¡ÔñÐèÒª²â¶¨µÄÎïÀíÁ¿£¬ÔËÓÃʵÑé·½·¨ÅжÏϵͳÖØÁ¦ÊÆÄܵı仯Á¿ÊÇ·ñÓ붯Äܵı仯Á¿ÏàͬÊǽâÌâµÄ¹Ø¼ü£®
¶ÔÓÚ»ù±¾²âÁ¿ÒÇÆ÷ÈçÓα꿨³ß¡¢ÂÝÐý²â΢Æ÷µÈÒªÁ˽âÆäÔ­Àí£¬ÒªÄÜÕýȷʹÓÃÕâЩ»ù±¾ÒÇÆ÷½øÐÐÓйزâÁ¿£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

3£®Èçͼ£¬ÖÊÁ¿ÎªmµÄСÇò¸éÔڹ⻬µÄбÃæÉÏ£¬Ð±ÃæÇã½ÇΪ¦Á£¬Ðü¹ÒСÇòµÄϸÏß´¦ÓÚÊúÖ±ÕŽôµÄ״̬£¬ÔòϸÏßÉϵÄÀ­Á¦£¨¡¡¡¡£©
A£®Ð¡ÓÚmgB£®´óÓÚmgC£®µÈÓÚmgD£®µÈÓÚÁã

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

4£®ÈçͼΪijһˮƽµç³¡Öеȼä¾àµÄÒ»×éµÈÊÆÃæ·Ö²¼£®Ò»¸ö´ø-qµçºÉÁ¿µÄÁ£×Ó´Ó×ø±êÔ­µãOÒÔ1¡Á104m/sµÄ³õËÙ¶ÈÏòxÖḺ·½ÏòÔ˶¯£¬Ô˶¯µ½x=-8cm´¦ËٶȼõΪÁ㣮²»¼ÆÒ»ÇÐĦ²Á£¬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®µç³¡Ç¿¶È´óСΪ5N/C£¬·½ÏòÑØxÖḺ·½Ïò
B£®Á£×ӵĵçºÉÁ¿ÓëÖÊÁ¿µÄ±ÈÖµ$\frac{q}{m}$=1.25¡Á106C/kg
C£®Á£×ÓÔ˶¯µ½x=-6cm´¦ÓÃʱ8¡Á10-6s
D£®ÔÚxÖáÉϲ»Í¬Î»Öã¬Á£×ӵĶ¯Äܺ͵çÊÆÄÜÖ®ºÍ¾ùΪһ¶¨Öµ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

1£®Í¼¼×Ϊ½»Á÷·¢µç»úµÄÔ­Àíͼ£¬Õý·½ÐÎÏßȦÔÚÔÈÇ¿´Å³¡ÖÐÈÆ´¹Ö±ÓڴŸÐÏßµÄÖáOO¡äÔÈËÙת¶¯£¬µçÁ÷±íΪÀíÏë½»Á÷µç±í£¬ÏßȦÖвúÉúµÄ½»±äµçÁ÷Ëæʱ¼äµÄ±ä»¯ÈçͼÒÒËùʾ£¨¡¡¡¡£©
A£®µçÁ÷±íµÄʾÊýΪ10AB£®ÏßȦת¶¯µÄ½ÇËÙ¶ÈΪ50¦Ðrad/s
C£®0.01sʱÏßȦƽÃæºÍ´Å³¡Æ½ÐÐD£®0.01sʱÏßȦµÄ´ÅͨÁ¿±ä»¯ÂÊΪ0

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

8£®ÈçͼËùʾ£¬ÖÊÁ¿Îªm1µÄľ¿éÔÚÖÊÁ¿Îªm2µÄ³¤Ä¾°åÉÏÏòÓÒ»¬ÐУ¬Ä¾¿éͬʱÊܵ½ÏòÓÒµÄÀ­Á¦FµÄ×÷Ó㬳¤Ä¾°å´¦ÓÚ¾²Ö¹×´Ì¬£¬ÒÑ֪ľ¿éÓëľ°å¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì1£¬Ä¾°åÓëµØÃæ¼äµÄ¶¯Ä¦²ÁÒòÊýΪ¦Ì2£¬Ôò£¨¡¡¡¡£©
A£®Ä¾¿éÊܵ½Ä¾°åµÄĦ²ÁÁ¦µÄ´óСµÈÓÚF
B£®Ä¾°åÊܵ½µØÃæµÄĦ²ÁÁ¦µÄ´óСһ¶¨ÊǦÌ2£¨m1+m2£©g
C£®Ä¾°åÊܵ½µØÃæµÄĦ²ÁÁ¦µÄ´óСһ¶¨ÊǦÌ1m1g
D£®ÎÞÂÛÔõÑù¸Ä±äFµÄ´óС£¬Ä¾°å¶¼²»¿ÉÄÜÔ˶¯

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

18£®t=0ʱ¿Ì£¬×ø±êÔ­µãO´¦µÄ²¨Ô´¿ªÊ¼ÔÚ´¹Ö±yÖá·½ÏòÉÏ×ö¼òгÔ˶¯£¬ÐγÉÑØxÖáÕý·½Ïò´«²¥µÄºá²¨£®t=0.4sʱ¿Ì£¬²¨´«µ½x=2mµÄAµã£¬²¨ÐÎÈçͼËùʾ£¬ÇóÔÙ¾­¹ý¶à³¤Ê±¼ä£¬Î»ÓÚx=5m´¦µÄÖʵãBµ½´ï²¨·å£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

5£®ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®ÓôòÆøͲ¸ø×ÔÐгµ´òÆøÐèÓÃÁ¦ÏòÏÂѹ»îÈû£¬Õâ˵Ã÷ÆøÌå·Ö×Ó¼äÓгâÁ¦
B£®ÎïÌåÌå»ýÔö´óʱ£¬·Ö×Ó¼ä¾àÔö´ó£¬·Ö×Ó¼äÊÆÄÜÒ²Ôö´ó
C£®ÈÈÁ¿¿ÉÒÔ´ÓµÍÎÂÎïÌå´«µÝµ½¸ßÎÂÎïÌå
D£®¶ÔÎïÌå×ö¹¦£¬ÎïÌåµÄÄÚÄÜ¿ÉÄܼõС
E£®ÎïÌåÖÐËùÓзÖ×ÓµÄÈÈÔ˶¯¶¯ÄܵÄ×ܺͽÐ×öÎïÌåµÄÄÚÄÜ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

2£®ÈçͼËùʾ£¬ÊµÏß±íʾij¾²µç³¡µÄµç³¡Ïߣ¬ÐéÏß±íʾ¸Ãµç³¡µÄµÈÊÆÃ森ÏÂÁÐÅжÏÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®1¡¢2Á½µãµÄ³¡Ç¿´óСÏàµÈB£®2¡¢3Á½µãµÄ³¡Ç¿Ïàͬ
C£®1¡¢2Á½µãµÄµçÊÆÏàµÈD£®2¡¢3Á½µãµÄµçÊÆÏàµÈ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ

3£®¹ØÓÚ¶àÓñíµÄʹÓã¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®²âµç×èʱָÕëƫתÖÁ¿¿½ü¿Ì¶ÈÅÌ×îÓҶ˸½½ü£¬ÐèÒª½«±¶Âʵ÷»»µ½µÍ±¶Âʵ²
B£®²âµç×èʱҪ±£Ö¤½Ó´¥Á¼ºÃ£¬¿ÉÓÃÊÖÖ±½Ó½«±í±ÊºÍµç×èÎÕ½ô
C£®²âµç·ÖеÄÔª¼þµÄµç×èʱֻҪ¶Ï¿ªµç·ÖеĵçÔ´¾Í¿ÉÒÔÁË
D£®Ê¹ÓÃÍê±Ïºó°ÎÈ¥±í±Ê»¹Ó¦°ÑÑ¡Ôñ¿ª¹ØÖÃÓÚ½»Á÷µçѹ×î´óÁ¿³Ì»òoffµ²

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸