ÌâÄ¿ÄÚÈÝ
ÈçͼËùʾ£¬Á½¸öÇáÖÊС»·A¡¢BÌ×Ôڹ⻬¹Ì¶¨µÄˮƽ¸ËÉÏ£¬Á½»·¼ä¾àΪa£¬ÓÃÔ³¤ÎªLµÄÇáÖÊÏðƤÌõ·Ö±ðÁ¬½ÓÁ½»·£¨a£¼L£¼2a £©£¬ÔÚÏðƤÌõÖмä¼ÓÒ»ÊúÖ±ÏòÉϵÄÁ¦F£¬ÔÙÔÚÁ½»·ÉÏ·Ö±ðÊ©¼Ó´óСÏàµÈµÄ×÷ÓÃÁ¦£¬Ê¹ÏðƤÌõÀ³ÉÒ»¸öÓë¸ËΧ³É±ß³¤ÎªaµÄÕýÈý½ÇÐα£³Öƽºâ£¬Ôò¹ØÓÚÔÙÊ©¼ÓÔÚÁ½»·ÉϵÄ×÷ÓÃÁ¦£¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
·ÖÎö£ºÏȽ«ÀÁ¦F°´ÕÕ×÷ÓÃЧ¹ûÑØ×ÅÁ½¸ùÏðƤÌõ·½Ïò½øÐзֽ⣬µÃµ½Á½¸ö·ÖÁ¦£»È»ºó¶ÔСԲ»·½øÐÐÊÜÁ¦·ÖÎö²¢¸ù¾ÝƽºâÌõ¼þÁÐʽ¼´¿É£®
½â´ð£º½â£ºA¡¢½«ÀÁ¦FÑØ×ÅÁ½¸ùÏðƤÌõ·½Ïò½øÐзֽ⣬Èçͼ
¸ù¾ÝƽÐÐËıßÐζ¨Ôò£¬µÃµ½Á½¸ö·ÖÁ¦Îª£ºF1=F2=
F£»
ÔÙ¶Ô»·ÊÜÁ¦·ÖÎö£¬µ±Ê©¼ÓÔÚ×ó±ß»·ÉϵÄÁ¦ÓëÁ¦F1ƽºâʱ£¬¼´µÈÓÚ
Fʱ£¬»·±£³Ö¾²Ö¹£¬¹ÊAÕýÈ·£»
B¡¢ÈôÑØ´¹Ö±ÏðƤÌõ·½ÏòÊ©¼ÓÁ¦T£¬ÏðƤÌõÊܵ½µÄÀÁ¦ºÍÁíÍâÊ©¼ÓµÄÁ¦ºÏÁ¦ÏòÉÏ£¬Èçͼ
Óɼ¸ºÎ¹ØϵµÃµ½£¬T=
F1=
F£¬¹ÊB´íÎó£»
C¡¢ÈôÑظ˷½ÏòÊ©¼ÓÁ¦T£¬ÏðƤÌõÏðƤÌõÊܵ½µÄÀÁ¦ºÍÁíÍâÊ©¼ÓµÄÁ¦ºÏÁ¦ÒÀÈ»ÏòÉÏ£¬Èçͼ
Óɼ¸ºÎ¹ØϵµÃµ½£¬T=
F1=
F£¬¹ÊCÕýÈ·£»
D¡¢²»¹ÜÑØ×Åʲô·½ÏòÊ©¼ÓÁ¦T£¬¸ÃÓëÏðƤÌõµÄÀÁ¦µÄºÏÁ¦Ò»¶¨ÑØ×ÅÊúÖ±·½Ïò£¬Í¨¹ý×÷ͼ¿ÉÖª£¬µ±Ê©¼ÓÁ¦·½ÏòÓëºÏÁ¦·½Ïò´¹Ö±Ê±£¬¸ÃÁ¦×îС£¬ÓÉCÑ¡Ïî½áÂÛ¿ÉÖª×îСÁ¦Îª
F£¬¹ÊD´íÎó£»
¹ÊÑ¡AC£®
¸ù¾ÝƽÐÐËıßÐζ¨Ôò£¬µÃµ½Á½¸ö·ÖÁ¦Îª£ºF1=F2=
| ||
3 |
ÔÙ¶Ô»·ÊÜÁ¦·ÖÎö£¬µ±Ê©¼ÓÔÚ×ó±ß»·ÉϵÄÁ¦ÓëÁ¦F1ƽºâʱ£¬¼´µÈÓÚ
| ||
3 |
B¡¢ÈôÑØ´¹Ö±ÏðƤÌõ·½ÏòÊ©¼ÓÁ¦T£¬ÏðƤÌõÊܵ½µÄÀÁ¦ºÍÁíÍâÊ©¼ÓµÄÁ¦ºÏÁ¦ÏòÉÏ£¬Èçͼ
Óɼ¸ºÎ¹ØϵµÃµ½£¬T=
| ||
3 |
1 |
3 |
C¡¢ÈôÑظ˷½ÏòÊ©¼ÓÁ¦T£¬ÏðƤÌõÏðƤÌõÊܵ½µÄÀÁ¦ºÍÁíÍâÊ©¼ÓµÄÁ¦ºÏÁ¦ÒÀÈ»ÏòÉÏ£¬Èçͼ
Óɼ¸ºÎ¹ØϵµÃµ½£¬T=
1 |
2 |
| ||
6 |
D¡¢²»¹ÜÑØ×Åʲô·½ÏòÊ©¼ÓÁ¦T£¬¸ÃÓëÏðƤÌõµÄÀÁ¦µÄºÏÁ¦Ò»¶¨ÑØ×ÅÊúÖ±·½Ïò£¬Í¨¹ý×÷ͼ¿ÉÖª£¬µ±Ê©¼ÓÁ¦·½ÏòÓëºÏÁ¦·½Ïò´¹Ö±Ê±£¬¸ÃÁ¦×îС£¬ÓÉCÑ¡Ïî½áÂÛ¿ÉÖª×îСÁ¦Îª
| ||
6 |
¹ÊÑ¡AC£®
µãÆÀ£º±¾Ìâ¹Ø¼üÊÇÏȽ«ÀÁ¦F°´ÕÕ×÷ÓÃЧ¹û½øÐзֽ⣬Ȼºó¶ÔС»·ÊÜÁ¦·ÖÎö£¬¸ù¾ÝƽºâÌõ¼þÁÐʽ¼ÆË㣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿