ÏðƤ½îÒ²Ïñµ¯»ÉÒ»Ñù£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚ£¬É쳤Á¿xÓ뵯Á¦F³ÉÕý±È£¬¼´F=kx£¬kµÄÖµÓëÏðƤ½îδÊܵ½À­Á¦Ê±µÄ³¤¶ÈL¡¢ºá½ØÃæ»ýSÓйأ®ÀíÂÛºÍʵ¼ù¶¼±íÃ÷k=YS/L£¬ÆäÖÐYÊÇÒ»¸öÓɲÄÁϾö¶¨µÄ³£Êý£¬²ÄÁÏÁ¦Ñ§ÖгÆ֮ΪÑîÊÏÄ£Á¿
£¨1£©ÔÚ¹ú¼Êµ¥Î»ÖÆÖУ¬ÑîÊÏÄ£Á¿YµÄµ¥Î»Ó¦¸ÃÊÇ
D
D

A£®N     B£®m   C£®N/m      D£®Pa
£¨2£©ÓÐÒ»¶Îºá½ØÃæΪԲÐεÄÏðƤ½î£¬Ó¦ÓÃÈçͼ¼×ËùʾµÄʵÑé×°Ö㬿ÉÒÔ²âÁ¿³ö
ËüµÄÑîÊÏÄ£Á¿YµÄÖµ£®Ê×ÏÈÀûÓòâÁ¿¹¤¾ßa²âµÃÏðƤ½îµÄ³¤¶ÈL=20.00cm£¬ÀûÓòâÁ¿¹¤¾ßb²âµÃÏðƤ½îδÊܵ½À­Á¦Ê±µÄÖ±¾¶D=4.000mm£¬ÄÇô²âÁ¿¹¤¾ßaºÍbÓ¦·Ö±ðΪ
ºÁÃ׿̶ȳß
ºÁÃ׿̶ȳß
¡¢
ÂÝÐý²â΢Æ÷
ÂÝÐý²â΢Æ÷
£®
£¨3£©ÓÃÈçͼ¼×ËùʾµÄ×°ÖþͿÉÒÔ²âÁ¿³öÕâÖÖÏðƤ½îµÄYÖµ£¬±íÖÐΪÏðƤ½îÊܵ½µÄÀ­Á¦FÓëÉ쳤Á¿xµÄʵÑé¼Ç¼£¬ÒÑÔÚͼÒÒÖÐ×÷³öF-xµÄͼÏó£®
À­Á¦F£¨N£© 5.0 10.0 15.0 20.0 25.0
É쳤Á¿x£¨cm£© 1.60 3.20 4.80 6.40 8.00
ÓÉÒÔÉÏʵÑé¿ÉÇó³ö¸ÃÏðƤ½îµÄYֵΪ
5¡Á106Pa
5¡Á106Pa
£¨±£ÁôһλÓÐЧÊý×Ö£©
·ÖÎö£º£¨1£©¸ù¾Ýk=
YS
L
£¬Í¨¹ýÎïÀíÁ¿µÄ¹ØϵµÃ³öYµÄµ¥Î»£®
£¨2£©Í¨¹ý²âÁ¿³¤¶ÈµÄµ¥Î»×îСֵȷ¶¨²âÁ¿µÄÆ÷²Ä£®
£¨3£©¸ù¾ÝͼÏßµÄбÂÊ£¬½áºÏk=
YS
L
£¬Çó³öÏðƤ½îµÄYÖµ£®
½â´ð£º½â£º£¨1£©¸ù¾Ýk=
YS
L
£¬ÖªkµÄµ¥Î»ÎªN/m£¬SµÄµ¥Î»Îªm2£¬LµÄµ¥Î»Îªm£¬ÔòY=
kL
S
£¬YµÄµ¥Î»ÎªN/m2£¬ÎªPa£®¹ÊDÕýÈ·£¬A¡¢B¡¢C´íÎó£®
¹ÊÑ¡D£®
£¨2£©²âÁ¿¹¤¾ßa²âµÃÏðƤ½îµÄ³¤¶ÈL=20.00cm£¬×îСµ¥Î»±ÈmmСһλ£¬Öª²âÁ¿¹¤¾ßΪºÁÃ׿̶ȳߣ®²âÁ¿¹¤¾ßb²âµÃÏðƤ½îδÊܵ½À­Á¦Ê±µÄÖ±¾¶D=4.000mm£¬²âÁ¿¾«È·µ½Ç§·ÖÖ®Ò»ºÁÃ×£¬²âÁ¿¹¤¾ßΪÂÝÐý²â΢Æ÷£®
£¨3£©Í¼ÏßµÄбÂÊk=
20-5
(6.40-1.60)¡Á10-2
=312.5N/m
£¬ÔòY=
kL
S
=
312.5¡Á0.2
3.14¡Á(2¡Á10-3)2
=5¡Á106Pa
£®
¹Ê´ð°¸Îª£º£¨1£©D£¨2£©ºÁÃ׿̶ȳߠÂÝÐý²â΢Æ÷  £¨3£©5¡Á106Pa
µãÆÀ£º¸ÃÌâÊôÓÚ´´ÐµÄÐÅÏ¢Ì⣬֪µÀµ¥Î»¼äµÄ¹Øϵ¶ÔÓ¦ÎïÀíÁ¿Ö®¼äµÄ¹Øϵ£¬ÒÔ¼°ÖªµÀͼÏßбÂʱíʾµÄº¬Ò壮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÏðƤ½îÒ²Ïñµ¯»ÉÒ»Ñù£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚ£¬É쳤Á¿xÓ뵯Á¦F³ÉÕý±È£¬¼´F=kx£¬kµÄÖµÓëÏðƤ½îδÊܵ½À­Á¦Ê±µÄ³¤¶ÈL¡¢ºá½ØÃæ»ýSÓйأ¬ÀíÂÛÓëʵ¼ù¶¼±íÃ÷k=Y
S
L
£¬ÆäÖÐYÊÇÒ»¸öÓɲÄÁϾö¶¨µÄ³£Êý£¬²ÄÁÏÁ¦Ñ§ÉϳÆ֮ΪÑîÊÏÄ£Á¿£®
£¨1£©ÔÚ¹ú¼Êµ¥Î»ÖÆÖУ¬ÑîÊÏÄ£Á¿YµÄµ¥Î»Ó¦¸ÃÊÇ
D
D

A£®N¡¡¡¡¡¡¡¡¡¡¡¡B£®m           C£®N/m             D£®Pa
£¨2£©ÓÐÒ»¶Îºá½ØÃæÊÇÔ²ÐεÄÏðƤ½î£¬Ó¦ÓÃÈçͼËùʾµÄʵÑé×°ÖÿÉÒÔ²âÁ¿³öËüµÄÑîÊÏÄ£Á¿YµÄÖµ£®Ê×ÏÈÀûÓòâÁ¿¹¤¾ßa²âµÃÏðƤ½îµÄ³¤¶ÈL=20.00cm£¬ÀûÓòâÁ¿¹¤¾ßb²âµÃÏðƤ½îδÊܵ½À­Á¦Ê±µÄÖ±¾¶D=4.000mm£¬ÄÇô²âÁ¿¹¤¾ßaÓ¦¸ÃÊÇ
ºÁÃ׿̶ȳß
ºÁÃ׿̶ȳß
£¬²âÁ¿¹¤¾ßbÓ¦¸ÃÊÇ
ÂÝÐý²â΢Æ÷
ÂÝÐý²â΢Æ÷
£®
£¨3£©±í¸ñÊÇÏðƤ½îÊܵ½µÄÀ­Á¦FÓëÉ쳤Á¿xµÄʵÑé¼Ç¼£®Çë×÷³öF-xͼÏó£¬ÓÉͼÏó¿ÉÇóµÃ¸ÃÏðƤ½îµÄ¾¢¶ÈϵÊýk=
3.1¡Á102
3.1¡Á102
N/m£®
À­Á¦F/N 5 10 15 20 25
É쳤Á¿x/cm 1.6 3.2 4.7 6.4 8.0
£¨4£©ÕâÖÖÏðƤ½îµÄYÖµµÈÓÚ
5¡Á106Pa
5¡Á106Pa
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÏðƤ½îÒ²Ïñµ¯»ÉÒ»Ñù£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚ£¬µ¯Á¦FÓëÉ쳤Á¿x³ÉÕý±È£¬¼´F=kx£¬kµÄÖµÓëÏðƤ½îδÊܵ½À­Á¦Ê±µÄ³¤¶ÈL¡¢ºá½ØÃæ»ýSÓйأ®ÀíÂÛÓëʵ¼ù¶¼±íÃ÷k=
YS
L
£¬ÆäÖÐYÊÇÒ»¸öÓɲÄÁϾö¶¨µÄ³£Êý£¬²ÄÁÏÁ¦Ñ§ÉϳÆ֮ΪÑîÊÏÄ£Á¿£®
£¨1£©ÔÚ¹ú¼Êµ¥Î»ÖУ¬ÑîÊÏÄ£Á¿YµÄµ¥Î»Ó¦¸ÃÊÇ
D
D
£®
A£®N    B£®m    C£®N/m    D£®Pa£¨N/m2£©
£¨2£©ÓÐÒ»¶Îºá½ØÃæ»ýÊÇÔ²ÐεÄÏðƤ½î£¬Ó¦ÓÃͼ1ËùʾµÄ×°ÖòâÁ¿ËüµÄÑîÊÏÄ£Á¿YµÄÖµÊ×ÏÈÀûÓÿ̶ȳ߲âÁ¿ÏðƤ½îδÊÜÀ­Á¦Ê±µÄ³¤¶ÈÈçͼ2Ëùʾ£¬ÔòL=
20.00cm
20.00cm
£»È»ºóÀûÓòâÁ¿¹¤¾ßa²âµÃÏðƤ½îδÊܵ½À­Á¦Ê±µÄÖ±¾¶D=4£¬000mm£¬ÄÇô²âÁ¿¹¤¾ßaÓ¦¸ÃÊÇ
ÂÝÐý²â΢Æ÷
ÂÝÐý²â΢Æ÷
£®

£¨3£©Ï±íÊÇÏðƤ½îÊܵ½µÄÀ­Á¦FÓëÉ쳤Á¿xµÄʵÑé¼Ç¼£º
À­Á¦F£¨N£© 5.1 10.0 14.9 20.1 25.0
É쳤Á¿x£¨mm£© 16.0 31.9 47.1 63.8 80.0

ÇëÔÚͼ3ÖÐ×÷³öF-xͼÏó£¬ÓÉͼÏó¿ÉÇóµÃ¸ÃÏðƤ½îµÄ¾¢¶ÈϵÊýk=
313N/m
313N/m
£®£¨±£Áô3λÓÐЧÊý×Ö£©
£¨4£©ÕâÖÖÏðƤ½îµÄY=
4.98¡Á106Pa
4.98¡Á106Pa
£®£¨±£Áô3λÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2013?Íþº£Ä£Ä⣩ÏðƤ½îÒ²Ïñµ¯»ÉÒ»Ñù£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚÉ쳤Á¿xÓ뵯Á¦F³ÉÕý±È£¬¼´F=kx£¬kµÄÖµÓëÏðƤ½îδÊܵ½À­Á¦Ê±µÄ³¤¶ÈL¡¢ºá½ØÃæ»ýSÓйأ®ÀíÂÛÓëʵÑ鶼±íÃ÷k=
YSL
£¬ÆäÖÐYÊÇÓɲÄÁϾö¶¨µÄ³£Êý£¬²ÄÁÏÁ¦Ñ§ÖгÆ֮ΪÑîÊÏÄ£Á¿£®
¢ÙÔÚ¹ú¼Êµ¥Î»ÖУ¬ÑîÊÏÄ£Á¿YµÄµ¥Î»Ó¦¸ÃÊÇ
d
d

a£® N     b£® m   c£® N/m      d£®N/m2
¢ÚÓÐÒ»¶Îºá½ØÃæÊÇÔ²ÐεÄÏðƤ½î£¬Ó¦Óÿ̶ȳߺÍÂÝÐý²â΢Æ÷·Ö±ð²âÁ¿ËüµÄ³¤¶ÈºÍÖ±¾¶Èçͼ1ºÍ2Ëùʾ£¬¿Ì¶È³ßµÄ
¶ÁÊýΪ
11.98
11.98
cm£¬ÂÝÐý²â΢Æ÷µÄ¶ÁÊýΪ
3.998
3.998
mm£®
¢ÛС»ªÍ¨¹ýʵÑé²âµÃ¸ÃÏðƤ½îµÄһЩÊý¾Ý£¬×ö³öÁËÍâÁ¦FÓëÉ쳤Á¿xÖ®¼äµÄ¹ØϵͼÏóÈçͼ3Ëùʾ£®ÓÉͼÏó
¿ÉÇóµÃ¸ÃÏðƤ½îµÄ¾¢¶ÈϵÊýk=
3.1¡Á102
3.1¡Á102
N/m £¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®Í¼ÏóÖÐͼÏß·¢ÉúÍäÇúµÄÔ­ÒòÊÇ
ÏðƤ½îÊÜÁ¦³¬³öÆ䵯ÐÔÏ޶ȣ¬²»ÔÙ×ñÑ­É쳤Á¿xÓ뵯Á¦F³ÉÕý±ÈµÄ¹æÂÉ
ÏðƤ½îÊÜÁ¦³¬³öÆ䵯ÐÔÏ޶ȣ¬²»ÔÙ×ñÑ­É쳤Á¿xÓ뵯Á¦F³ÉÕý±ÈµÄ¹æÂÉ
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÏðƤ½îÒ²Ïñµ¯»ÉÒ»Ñù£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚ£¬É쳤Á¿xÓ뵯Á¦F³ÉÕý±È£¬¼´F=kx£¬kµÄÖµÓëÏðƤ½îδÊܵ½À­Á¦Ê±µÄ³¤¶ÈL¡¢ºá½ØÃæ»ýSÓйأ¬ÀíÂÛÓëʵ¼ù¶¼±íÃ÷k=YS/L£¬ÆäÖÐYÊÇÒ»¸öÓɲÄÁϾö¶¨µÄ³£Êý£¬²ÄÁÏÁ¦Ñ§ÖгÆ֮ΪÑîÊÏÄ£Á¿£®
£¨1£©ÓÐÒ»¶Îºá½ØÃæÊÇÔ²ÐεÄÏðƤ½î£¬Ó¦ÓÃÈçͼ¼×ËùʾµÄʵÑé×°ÖÿÉÒÔ²âÁ¿³öËüµÄÑîÊÏÄ£Á¿YµÄÖµ£®Ï±íΪÏðƤ½îÊܵ½µÄÀ­Á¦FÓëÉ쳤Á¿xµÄʵÑé¼Ç¼£¬ÇëÔÚͼÒÒÖÐ×÷³öF-xͼÏó£®
À­Á¦F/N 5.0 10.0 15.0 20.0 25.0
É쳤Á¿x/cm 1.60 3.20 4.80 6.40 8.00
£¨2£©ÓÉÒÔÉÏʵÑé¿ÉÇó³ö¸ÃÏðƤ½îµÄKֵΪ
 
N/m£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®
£¨3£©Ä³Í¬Ñ§ÔÚ¼ÒÖÐÓÃÈý¸ùÏàͬµÄÏðƤ½î£¨×ñÑ­ºú¿Ë¶¨ÂÉ£©À´Ì½¾¿ºÏÁ¦µÄ·½·¨£¬ÈçͼËùʾ£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸