ÌâÄ¿ÄÚÈÝ

7£®ÀûÓôòµã¼ÆʱÆ÷̽¾¿Ð¡³µµÄËÙ¶ÈËæʱ¼ä±ä»¯µÄ¹æÂÉ£®Èçͼ¸ø³öÁ˸ôÎʵÑéÖУ¬0¡¢1¡¢2¡¢3¡¢4¡¢5¡¢6¶¼Îª¼ÆÊýµã£¬ÏàÁÚÁ½¸ö¼ÇÊýµãÖ®¼ä»¹ÓÐËĸöµãδ»­£®²âµÃ£ºs1=1.40cm£¬s2=1.90cm£¬s3=2.40cm£¬s4=2.90cm£¬s5=3.40cm£¬s6=3.90cm£®

ÒÑÖª´òµã¼ÆʱÆ÷µçԴƵÂÊΪ50Hz£¬ÔòÖ½´øÉÏ´òÏàÁÚÁ½¼ÇÊýµãµÄʱ¼ä¼ä¸ôΪ0.1S£®
ÔÚ¼ÆÊýµã3Ëù´ú±íµÄʱ¿Ì£¬Ö½´øÔ˶¯µÄ˲ʱËÙ¶ÈΪv3=0.215m/s£¬ÎïÌåµÄ¼ÓËÙ¶Èa=0.500m/s2£®£¨±£ÁôÈýλÓÐЧÊý×Ö£©

·ÖÎö ¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛ¹«Ê½¡÷x=aT2¿ÉÒÔÇó³ö¼ÓËٶȵĴóС£¬¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯ÖÐʱ¼äÖеãµÄËٶȵÈÓڸùý³ÌÖеÄƽ¾ùËٶȣ¬¿ÉÒÔÇó³ö´òÖ½´øÉÏ3µãʱС³µµÄ˲ʱËٶȴóС£®

½â´ð ½â£ºÓÉÓÚÿÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐ4¸öµãûÓл­³ö£¬ËùÒÔÏàÁڵļÆÊýµã¼äµÄʱ¼ä¼ä¸ôT=0.1s£¬
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯ÖÐʱ¼äÖеãµÄËٶȵÈÓڸùý³ÌÖеÄƽ¾ùËٶȣ¬¿ÉÒÔÇó³ö´òÖ½´øÉÏ3µãʱС³µµÄ˲ʱËٶȴóС£®
v3=$\frac{0.019+0.024}{2¡Á0.1}$=0.215m/s
¸ù¾ÝÖ½´øµÄÊý¾ÝµÃ³öÏàÁڵļÆÊýµã¼äµÄ¾àÀëÖ®²îÏàµÈ£¬¼´¡÷x=0.005m£¬
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛ¹«Ê½¡÷x=aT2¿ÉÒÔÇó³ö¼ÓËٶȵĴóС£¬
µÃ£ºa=$\frac{0.005}{0.01}$=0.500m/s2£®
¹Ê´ð°¸Îª£º0.1£»0.215£»0.500

µãÆÀ ÒªÌá¸ßÓ¦ÓÃÔȱäËÙÖ±ÏߵĹæÂÉÒÔ¼°ÍÆÂÛ½â´ðʵÑéÎÊÌâµÄÄÜÁ¦£¬ÔÚƽʱÁ·Ï°ÖÐÒª¼ÓÇ¿»ù´¡ÖªÊ¶µÄÀí½âÓëÓ¦Óã®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø