ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Í¼¼×ÊÇijÈËÕ¾ÔÚÁ¦´«¸ÐÆ÷ÉÏ×ö϶ס¢ÆðÌø¶¯×÷µÄʾÒâͼ£¬µãPÊÇËûµÄÖØÐÄλÖá£Í¼ÒÒÊǸù¾ÝÁ¦´«¸ÐÆ÷²É¼¯µ½µÄÊý¾Ý×÷³öµÄÁ¦-ʱ¼äͼÏß¡£Á½Í¼ÖÐa¡«g¸÷µã¾ù¶ÔÓ¦£¬ÆäÖÐÓм¸¸öµãÔÚͼ¼×ÖÐûÓл­³ö¡£gÈ¡10m/s2¡£¸ù¾ÝͼÏñ·ÖÎö¿ÉÖª£¨ £©

A. ´ËÈ˵ÄÖØÁ¦Îª750N

B. bµãÊÇ´ËÈË϶×ÖÁ×îµÍµãµÄλÖÃ

C. ´ËÈËÔÚfµãµÄ¼ÓËٶȵÈÓÚÁã

D. ´ËÈËÔÚdµãµÄ¼ÓËٶȵÈÓÚ20m/s2

¡¾´ð°¸¡¿D

¡¾½âÎö¡¿aͼÈË´¦ÓÚƽºâ״̬£¬´«¸ÐÆ÷µÄʾÊý´óСµÈÓÚÈ˵ÄÖØÁ¦£¬¼´mg=500N£¬ËùÒÔA´íÎó£»ÈËÔÚ϶׵Ĺý³ÌÖÐÏȼÓËÙºó¼õËÙ£¬bµãÈ˶Դ«¸ÐÆ÷µÄѹÁ¦×îС£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉ£º £¬ÏòϵļÓËÙ¶È×î´ó£¬²»ÊÇ×îµÍµã£¬¹ÊB´íÎó£»fµãÈ˶Դ«¸ÐÆ÷ѹÁ¦ÎªÁ㣬¼´ÈËÀ뿪´«¸ÐÆ÷£¬¼ÓËٶȵÈÓÚg£¬C´íÎó£»ÔÚdµã£¬½âµÃ¼ÓËÙ¶Èa=20m/s2£¬DÕýÈ·¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

¡¾ÌâÄ¿¡¿(1)¿Æѧ¼Ò·¢ÏÖ£¬³ýÁËÀàËÆÌ«ÑôϵµÄºãÐÇ-ÐÐÐÇϵͳ£¬»¹´æÔÚÐí¶àË«ÐÇϵͳ£¬Í¨¹ý¶ÔËüÃǵÄÑо¿£¬Ê¹ÎÒÃǶÔÓîÖæÓÐÁ˽ÏÉî¿ÌµÄÈÏʶ¡£Ë«ÐÇϵͳÊÇÓÉÁ½¸öÐÇÌå¹¹³É£¬ÆäÖÐÿ¸öÐÇÌåµÄÏ߶ȣ¨Ö±¾¶£©¶¼Ô¶Ð¡ÓÚÁ½ÐÇÌå¼äµÄ¾àÀ룬һ°ãË«ÐÇϵͳ¾àÀëÆäËûÐÇÌåºÜÔ¶£¬¿ÉÒÔµ±×ö¹ÂÁ¢ÏµÍ³´¦Àí¡£ÒÑ֪ij˫ÐÇϵͳÖÐÿ¸öÐÇÌåµÄÖÊÁ¿¶¼ÊÇM0£¬Á½ÕßÏà¾àL£¬ËüÃÇÕýΧÈÆÁ½ÕßÁ¬ÏßµÄÖеã×öÔÈËÙÔ²ÖÜÔ˶¯£¬ÒýÁ¦³£Á¿ÎªG¡£ Çó£º

¢Ù¸ÃË«ÐÇϵͳÖÐÐÇÌåµÄ¼ÓËٶȴóСa£»

¢Ú¸ÃË«ÐÇϵͳµÄÔ˶¯ÖÜÆÚT¡£

(2)΢¹ÛÊÀ½çÓëºê¹ÛÊÀ½çÍùÍù´æÔÚÆæÃîµÄÏàËÆÐÔ¡£¶ÔÓÚÇâÔ­×ÓÄ£ÐÍ£¬ÒòΪԭ×Ӻ˵ÄÖÊÁ¿Ô¶´óÓÚµç×ÓÖÊÁ¿£¬¿ÉÒÔºöÂÔÔ­×Ӻ˵ÄÔ˶¯£¬ÐγÉÀàËÆÌìÎÄѧÖеĺãÐÇ-ÐÐÐÇϵͳ£¬¼ÇΪģÐÍ¢ñ¡£ÁíÒ»ÖÖÄ£ÐÍÈÏΪÇâÔ­×ӵĺËÍâµç×Ó²¢·ÇÈƺËÐýת£¬¶øÊÇÀàËÆÌìÎÄѧÖеÄË«ÐÇϵͳ£¬ºËÍâµç×ÓºÍÔ­×ÓºËÒÀ¿¿¿âÂØÁ¦×÷ÓÃʹËüÃÇͬʱÈƱ˴ËÁ¬ÏßÉÏijһµã×öÔÈËÙÔ²ÖÜÔ˶¯£¬¼ÇΪģÐÍ¢ò¡£ÒÑÖªºËÍâµç×ÓµÄÖÊÁ¿Îªm£¬ÇâÔ­×Ӻ˵ÄÖÊÁ¿ÎªM£¬¶þÕßÏà¾àΪr£¬¾²µçÁ¦³£Á¿Îªk£¬µç×ÓºÍÇâÔ­×Ӻ˵ĵçºÉÁ¿´óС¾ùΪe¡£

¢ÙÄ£ÐÍ¢ñ¡¢¢òÖÐϵͳµÄ×ܶ¯ÄÜ·Ö±ðÓÃEk¢ñ¡¢ Ek¢ò±íʾ£¬ÇëÍÆÀí·ÖÎö£¬±È½ÏEk¢ñ¡¢ Ek¢òµÄ´óС¹Øϵ£»

¢ÚÄ£ÐÍ¢ñ¡¢¢òÖкËÍâµç×Ó×öÔÈËÙÔ²ÖÜÔ˶¯µÄÖÜÆÚ·Ö±ðÓÃT¢ñ¡¢T¢ò±íʾ£¬Í¨³£Çé¿öÏÂÇâÔ­×ÓµÄÑо¿²ÉÓÃÄ£ÐÍ¢ñµÄ·½°¸£¬Çë´ÓÖÜÆڵĽǶȷÖÎöÕâÑù¼ò»¯´¦ÀíµÄºÏÀíÐÔ¡£

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

¾«Ó¢¼Ò½ÌÍø