ÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM(M=3m)µÄ¹â»¬¿ò¼ÜÄÚ£¬Ð¡Îï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È¡£ÏÖÉè¿ò¼ÜÓëСÎï¿éÒÔ¹²Í¬ËÙ¶Èv0Ñع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯¡£Çó£º
£¨1£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪÁ㣬µ«Óëǽ±Ú¼ä²»Õ³Á¬£¬Çó¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµ£»
£¨2£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄÜ¡÷E1£»
£¨3£©ÔÚ£¨2£©ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ£¿Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄÜ¡÷E2¡££¨Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä£©
½â£º£¨1£©¿ò¼ÜÓëǽ±ÚÅöײºó£¬Ð¡Îï¿éÒÔËÙ¶Èv0ѹËõµ¯»É£¬ºóÓÖ·µ»Ø£¬µ±·µ»Øԭλʱ¿ò¼Ü¿ªÊ¼À뿪£¬ÓÉ»úеÄÜÊغãÖª£¬´ËʱÎï¿éËÙ¶ÈÊÇv0£¬·½ÏòÏòÓÒ£¬É赯»ÉÓÐ×î´óÊÆÄÜʱ¹²Í¬ËÙ¶ÈΪv
Óɶ¯Á¿Êغ㶨ÂÉÖªmv0=4mv
ÓÉÄÜÁ¿Êغ㶨ÂÉ
£¨2£©Éè¿ò¼Ü·´µ¯ËÙ¶ÈΪv1¡¢×î´óÊÆÄÜʱ¹²Í¬ËÙ¶ÈΪv'¡£Óɶ¯Á¿¡¢ÄÜÁ¿Êغ㶨ÂɵÃ
3mv1-mv0=4mv'
 
½âµÃ
½âµÃ£¨ÉáÈ¥£©
´úÈëµÃv'=0
 
£¨3£©ÓÉ£¨2£©ÖªµÚÒ»´ÎÅöºó·´µ¯ºó£¬¶þÕß×ܶ¯Á¿ÎªÁ㣬¹Êµ±µ¯»ÆÔÙ´ÎÉìÕ¹ºóÈԿɼÌÐøÓëǽ±ÚÏàײ£¬²¢ÒÔµÄËÙ¶ÈÓëǽ±ÚÏàײ£¬ÓÉÌâÒâÖª
ËùÒÔ
¹Ê
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM£¨M=3m£©µÄ¹â»¬¿ò¼ÜÄÚ£®Ð¡Îï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È£®ÏÖ¿ò¼ÜÓëСÎï¿é¹²Í¬ÒÔËÙ¶ÈV0Ñع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯£®
£¨1£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪ0ÇÒÓëǽ±Ú¼ä²»Õ³Á¬£¬Çó¿ò¼Ü¸ÕÒªÍÑÀëǽ±ÚʱСÎï¿éËٶȵĴóСºÍ·½Ïò£»
£¨2£©ÔÚ£¨1£©ÇéÐÎÏ£¬¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµ
£¨3£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ2/3mvo2£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄÜ¡÷E1
£¨4£©ÔÚ£¨3£©ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ£¿Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉ£®ÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄÜ¡÷E2£®£¨Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM(M=3m)µÄ¹â»¬¿ò¼ÜÄÚ¡£Ð¡Îï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È£®ÏÖÉè¿ò¼ÜÓëСÎï¿éÒÔ¹²Í¬ËÙ¶ÈV0Ñع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯¡£

(1)Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪÁ㣬µ«Óëǽ±Ú¼ä²»Õ³Á¬£¬Çó¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµ¡£

(2)Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄܦ¤E1¡£

(3)ÔÚ(2)ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ?Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉ£®ÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄܦ¤E2¡£(Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä)

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£ºÄÏͨ¶þÄ£ ÌâÐÍ£ºÎÊ´ðÌâ

ÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM£¨M=3m£©µÄ¹â»¬¿ò¼ÜÄÚ£®Ð¡Îï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È£®ÏÖ¿ò¼ÜÓëСÎï¿é¹²Í¬ÒÔËÙ¶ÈV0Ñع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯£®
£¨1£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪ0ÇÒÓëǽ±Ú¼ä²»Õ³Á¬£¬Çó¿ò¼Ü¸ÕÒªÍÑÀëǽ±ÚʱСÎï¿éËٶȵĴóСºÍ·½Ïò£»
£¨2£©ÔÚ£¨1£©ÇéÐÎÏ£¬¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµ
£¨3£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ2/3mvo2£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄÜ¡÷E1
£¨4£©ÔÚ£¨3£©ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ£¿Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉ£®ÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄÜ¡÷E2£®£¨Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä£©
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM(M=3 m)µÄ¹â»¬¿ò¼ÜÄÚ.СÎï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È.ÏÖ¿ò¼ÜÓëСÎï¿é¹²Í¬ÒÔËÙ¶Èv0Ñع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯.

(1)Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪ0ÇÒÓëǽ±Ú¼ä²»ð¤Á¬£¬Çó¿ò¼Ü¸ÕÒªÍÑÀëǽ±ÚʱСÎï¿éËٶȵĴóСºÍ·½Ïò£»

(2)ÔÚ(1)ÇéÐÎÏ£¬¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµEpm;

(3)Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ mv02£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄܦ¤E1;

(4)ÔÚ(3)ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ.Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉ£®ÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄܦ¤E2.(Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä)

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2006Äê½­ËÕÊ¡ÄÏͨÊи߿¼ÎïÀí¶þÄ£ÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

ÈçͼËùʾ£¬ÇáÖʵ¯»É½«ÖÊÁ¿ÎªmµÄСÎï¿éÁ¬½ÓÔÚÖÊÁ¿ÎªM£¨M=3m£©µÄ¹â»¬¿ò¼ÜÄÚ£®Ð¡Îï¿éλÓÚ¿ò¼ÜÖÐÐÄλÖÃʱµ¯»É´¦ÓÚ×ÔÓɳ¤¶È£®ÏÖ¿ò¼ÜÓëСÎï¿é¹²Í¬ÒÔËÙ¶ÈVÑع⻬ˮƽÃæÏò×óÔÈËÙ»¬¶¯£®
£¨1£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײºóËÙ¶ÈΪ0ÇÒÓëǽ±Ú¼ä²»Õ³Á¬£¬Çó¿ò¼Ü¸ÕÒªÍÑÀëǽ±ÚʱСÎï¿éËٶȵĴóСºÍ·½Ïò£»
£¨2£©ÔÚ£¨1£©ÇéÐÎÏ£¬¿ò¼ÜÍÑÀëǽ±ÚºóµÄÔ˶¯¹ý³ÌÖУ¬µ¯»Éµ¯ÐÔÊÆÄܵÄ×î´óÖµ
£¨3£©Èô¿ò¼ÜÓëǽ±Ú·¢Éú˲¼äÅöײ£¬Á¢¼´·´µ¯£¬ÔÚÒÔºó¹ý³ÌÖе¯»ÉµÄ×î´óµ¯ÐÔÊÆÄÜΪ2/3mvo2£¬Çó¿ò¼ÜÓëǽ±ÚÅöײʱËðʧµÄ»úеÄÜ¡÷E1
£¨4£©ÔÚ£¨3£©ÇéÐÎÏÂÊÔÅж¨¿ò¼ÜÓëǽ±ÚÄÜ·ñ·¢ÉúµÚ¶þ´ÎÅöײ£¿Èô²»ÄÜ£¬ËµÃ÷ÀíÓÉ£®ÈôÄÜ£¬ÊÔÇó³öµÚ¶þ´ÎÅöײʱËðʧµÄ»úеÄÜ¡÷E2£®£¨Éè¿ò¼ÜÓëǽ±Úÿ´ÎÅöײǰºóËٶȴóС֮±È²»±ä£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸