ÌâÄ¿ÄÚÈÝ
ijͬѧÓÃÏÂͼÖУ¨¼×£©µÄ×°ÖÃ×ö¡°Ì½¾¿µ¯Á¦ºÍµ¯»ÉÉ쳤µÄ¹Øϵ¡±µÄʵÑ飬ËûÔÚµ¯»É϶˹ÒÉϹ³Â룬²¢Öð¸öÔö¼Ó¹³Â룬ͬʱÓúÁÃ׿̶ȳ߷ֱð²â³ö¼Ó¹Ò²»Í¬¹³Âëʱµ¯»ÉµÄ³¤¶È1£¬Ëû²â³öµÄµ¯»ÉµÄµ¯Á¦F£¨FµÄ´óСµÈÓÚËù¹Ò¹³ÂëÊܵ½µÄÖØÁ¦£©Ó뵯»ÉµÄ³¤¶È1µÄ¸÷×éÊý¾Ý£¬²¢Öðµã±ê×¢ÔÚ£¨ÒÒ£©Í¼ÖеÄ×ø±êÖ½ÉÏ£¬ÓÉ´Ë¿ÉÒԵõ½¸Ãµ¯»ÉµÄÔ³¤L0=
150
150
mm£¬¸Ãµ¯»ÉµÄ¾¢¶ÈϵÊýΪ100
100
N/m£®·ÖÎö£º¸ù¾Ýºú¿Ë¶¨ÂÉд³öFÓëLµÄ¹Øϵ·½³Ì£¬È»ºó¸ù¾ÝÓйØÊýѧ֪ʶ½øÐÐÇó½â£®
½â´ð£º½â£ºÓÃÃèµã·¨×÷ͼ£º
ÓÉ´Ë¿ÉÖª£¬µ±F=0ʱ£¬l=150mm£¬ËùÒԸõ¯»ÉµÄÔ³¤L0=150mm£®
¸ù¾Ýºú¿Ë¶¨ÂÉÓУºF=k£¨l-l0£©£¬
ͼÏóµÄбÂÊ´óСΪµ¯»ÉµÄ¾¢¶ÈϵÊý£¬
ËùÒÔk=
=
=100N/m£®
¹Ê´ð°¸Îª£º150£» 100£®
ÓÉ´Ë¿ÉÖª£¬µ±F=0ʱ£¬l=150mm£¬ËùÒԸõ¯»ÉµÄÔ³¤L0=150mm£®
¸ù¾Ýºú¿Ë¶¨ÂÉÓУºF=k£¨l-l0£©£¬
ͼÏóµÄбÂÊ´óСΪµ¯»ÉµÄ¾¢¶ÈϵÊý£¬
ËùÒÔk=
¡÷F |
¡÷l |
(5-0)N |
(200-150)mm |
¹Ê´ð°¸Îª£º150£» 100£®
µãÆÀ£º¶ÔÓÚ»ù´¡ÊµÑéÒª¼ÓÇ¿¶¯ÊÖÄÜÁ¦£¬Ìá¸ßʵÑéˮƽ£¬Í¬Ê±¼ÓÇ¿Êýѧ֪ʶÔÚÎïÀíÖеÄÓ¦Óã¬Ìá¸ßÊý¾Ý´¦ÀíÄÜÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿