²é¿´: 627  |  »Ø¸´: 2
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Biotljy

ľ³æ (СÓÐÃûÆø)

¶·Õ½Ê¥·ð

[ÇóÖú] ÇóÖú°ïÎÒ½âÒ»ÏÂÕâ¸ö·½³Ì£¡£¡Ð»Ð»£¡£¡

ÇóÖú½âÒ»ÏÂF=mg£¨¦Ì sin¦È - cos¦È£©Õâ¸ö·½³Ì£¬¦ÌºÍ¦ÈÊÇδ֪Êý£¬¦ÈÊÇÒ»¸ö½Ç£¬È¡ÖµÔÚ0~90¡ãÖ®¼ä£¬¦ÌΪÕýÊý£¬¿ÉÒÔ´óÓÚ1£¡
ÐèÒªµÃ³öÒ»¸öµ±F>0µÄʱºò£¬¦ÌµÄÒ»¸ö¶¨Öµ£¬²¢ÇÒËæ×ŦȵÄÔö¼ÓFÊǼõСµÄÇ÷ÊÆ£¡
mg¿ÉÒÔ¿´ÎªÒ»¸ö³£Êý¡£

×Ô¼ºÓÃMathematica»­ÁËÒ»¸ö3DͼÏñµ«ÊDz»»á·ÖÎö£¬Ï£Íû´ó¼ÒÄܰïÎÒ½âһϣ¬²¢¿ÉÒԵõ½Ò»¸öͼÏñ£¬ÒÔ¼°·ÖÎöµÄ¾ßÌå½á¹û£¡Ð»Ð»£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zsm28

Ìú³æ (³õÈëÎÄ̳)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Áî tan¦Õ = 1/¦Ì, Ôò sin¦Õ = 1/¡Ì(1+¦Ì2), cos¦Õ = ¦Ì/¡Ì(1+¦Ì2)
F = mg¡Ì(1+¦Ì2) sin(¦È - ¦Õ)
×¢Òâ mg¡Ì(1+¦Ì2) ÊǶ¨Öµ£¬ÏÂÃæµÄ·ÖÎöÇë×Ô¼º×öÀ²£¡
3Â¥2013-10-25 01:41:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 3 ¸ö»Ø´ð

feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÒòΪ  F=mg£¨¦Ì sin¦È - cos¦È£©
ËùÒÔ  dF/d¦È =mg£¨¦Ì cos¦È + sin¦È£©
¸ù¾Ý¡°Ëæ×ŦȵÄÔö¼ÓFÊǼõСµÄÇ÷ÊÆ£¡¡±£¬ËµÃ÷
dF/d¦È =mg£¨¦Ì cos¦È + sin¦È£©<=0
ÓÉÓÚ ¦ÈÊÇÒ»¸ö½Ç£¬È¡ÖµÔÚ0~90¡ãÖ®¼ä£¬cos¦È + sin¦È¿Ï¶¨·Ç¸º
¡¾¦ÌΪÕýÊý£¬¿ÉÒÔ´óÓÚ1£¡¡¿
Ã÷ÏÔ  ±¾ÌâÎÞ½â
2Â¥2013-10-24 21:46:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 335Çóµ÷¼Á +4 yuyuÓî 2026-03-23 5/250 2026-03-23 23:49 by Txy@872106
[¿¼ÑÐ] 291 Çóµ÷¼Á +4 »¯¹¤2026½ì±ÏÒµÉ 2026-03-21 5/250 2026-03-23 16:46 by »¯¹¤2026½ì±ÏÒµÉ
[¿¼ÑÐ] 070300£¬Ò»Ö¾Ô¸±±º½320Çóµ÷¼Á +3 Jerry0216 2026-03-22 5/250 2026-03-23 09:16 by ¡£¡£ÌÃÌÃ
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +5 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 5/250 2026-03-22 16:42 by tcx007
[¿¼ÑÐ] 311Çóµ÷¼Á +3 26ÑÐ0 2026-03-20 3/150 2026-03-22 14:46 by ColorlessPI
[¿¼ÑÐ] Çóµ÷¼Á +7 Auroracx 2026-03-22 7/350 2026-03-22 12:38 by ËØÑÕÇã³Ç1988
[¿¼²©] ÕÐÊÕ²©Ê¿1-2ÈË +3 QGZDSYS 2026-03-18 4/200 2026-03-22 10:25 by QGZDSYS
[»ù½ðÉêÇë] ɽ¶«Ê¡ÃæÉÏÏîÄ¿ÏÞ¶îÆÀÉó +4 ʯÈð0426 2026-03-19 4/200 2026-03-22 08:50 by Wei_ren
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄÏ´ó£¬0703»¯Ñ§£¬·ÖÊý336£¬Çóµ÷¼Á +3 ÊÕµ½VS 2026-03-21 3/150 2026-03-21 18:42 by ѧԱ8dgXkO
[¿¼ÑÐ] 313Çóµ÷¼Á +4 ËÁÈþ·¡Ò¼22 2026-03-19 4/200 2026-03-21 17:33 by ColorlessPI
[¿¼ÑÐ] ²ÄÁϹ¤³Ì£¨×¨£©Ò»Ö¾Ô¸985 ³õÊÔ335Çóµ÷¼Á +3 hiloiy 2026-03-17 4/200 2026-03-21 03:04 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ£¬080502£¬354·ÖÇóµ÷¼Á +5 ÊØºòϦÑôCF 2026-03-18 5/250 2026-03-21 01:06 by JourneyLucky
[¿¼ÑÐ] 308Çóµ÷¼Á +3 °¢½ã°¢½ã¼Ò°¡ 2026-03-18 3/150 2026-03-20 23:24 by JourneyLucky
[¿¼ÑÐ] 329Çóµ÷¼Á +9 ÏëÉÏѧ߹߹ 2026-03-19 9/450 2026-03-20 22:01 by luoyongfeng
[¿¼ÑÐ] 261ÇóBÇøµ÷¼Á£¬¿ÆÑо­Àú·á¸» +3 Å£Ä̺Üæ 2026-03-20 4/200 2026-03-20 19:34 by JourneyLucky
[¿¼ÑÐ] ÕÐÊÕµ÷¼Á˶ʿ +4 lidianxing 2026-03-19 12/600 2026-03-20 12:25 by lidianxing
[¿¼²©] É격26Äê +3 °Ë6°Ë68 2026-03-19 3/150 2026-03-19 19:43 by nxgogo
[¿¼ÑÐ] Ò»Ö¾Ô¸¸£´ó288Óлú»¯Ñ§£¬Çóµ÷¼Á +3 Сľ³æ200408204 2026-03-18 3/150 2026-03-19 13:31 by houyaoxu
[˶²©¼ÒÔ°] ºþ±±¹¤Òµ´óѧ ÉúÃü¿ÆÑ§Ó뽡¿µÑ§Ôº-¿ÎÌâ×éÕÐÊÕ2026¼¶Ê³Æ·/ÉúÎï·½Ïò˶ʿ +3 1ϲ´º8 2026-03-17 5/250 2026-03-17 17:18 by ber´¨cool×Ó
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 ä¿ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û