Èçͼ12Ëùʾ£¬³¤L=1.6m£¬ÖÊÁ¿M=3kgµÄľ°å¾²·ÅÔڹ⻬ˮƽÃæÉÏ£¬ÖÊÁ¿m=1kg¡¢
´øµçÁ¿q=+2.5¡Á10-4CµÄС»¬¿é·ÅÔÚľ°åµÄÓҶˣ¬Ä¾°åºÍÎï¿é¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.1£¬ËùÔÚ¿Õ¼ä¼ÓÓÐÒ»¸ö·½ÏòÊúÖ±ÏòÏÂÇ¿¶ÈΪE=4.0¡Á104N/CµÄÔÈÇ¿µç³¡£¬ÈçͼËùʾ£¬ÏÖ¶Ôľ°åÊ©¼ÓһˮƽÏòÓÒµÄÀ­Á¦F£®È¡g=10m/s2£¬Çó£º
£¨1£©Ê¹Îï¿é²»µôÏÂÈ¥µÄ×î´óÀ­Á¦F£»
£¨2£©Èç¹ûÀ­Á¦F=11Nºã¶¨²»±ä£¬Ð¡Îï¿éËùÄÜ»ñµÃµÄ×î´ó¶¯ÄÜ.

£¨1£©F×î´óµÄʱºòÎï¿é²»µôÏ£¬±ØÊÇÎï¿éÓëľ°å¾ßÓй²Í¬µÄ×î´ó¼ÓËÙ¶Èa1£¬¶ÔÎï¿é£¬×î´ó¼ÓËٶȣ¬a1 =                            
¶ÔÕûÌåF =£¨M + m£©a1 =" 8N                                              "
£¨2£©Ä¾°åµÄ¼ÓËÙ¶È
m/s2 =" 3" m/s2                     
ÓÉ                                                           
µÃÎï¿é»¬¹ýľ°åËùÓÃʱ¼ät =s                                        
Îï¿éÀ뿪ľ°åʱµÄËÙ¶Èv1 = a1t =m/s                            
                                

½âÎö

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Èçͼ12Ëùʾ£¬³¤L=75 cmµÄ¾²Ö¹Ö±Í²ÖÐÓÐÒ»²»¼Æ´óСµÄСÇò£¬Í²ÓëÇòµÄ×ÜÖÊÁ¿Îª4 kg.ÏÖ¶ÔͲʩ¼ÓÒ»ÊúÖ±ÏòÏ¡¢´óСΪ21 NµÄºãÁ¦£¬Ê¹Í²ÊúÖ±ÏòÏÂÔ˶¯£¬¾­t=0.5 sʱ¼ä£¬Ð¡ÇòÇ¡ºÃÔ¾³öͲ¿Ú.ÇóСÇòµÄÖÊÁ¿.£¨È¡g=10 m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Èçͼ12Ëùʾ£¬³¤L=1.6m£¬ÖÊÁ¿M=3kgµÄľ°å¾²·ÅÔڹ⻬ˮƽÃæÉÏ£¬ÖÊÁ¿m=1kg¡¢

´øµçÁ¿q=+2.5¡Á10-4CµÄС»¬¿é·ÅÔÚľ°åµÄÓҶˣ¬Ä¾°åºÍÎï¿é¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.1£¬ËùÔÚ¿Õ¼ä¼ÓÓÐÒ»¸ö·½ÏòÊúÖ±ÏòÏÂÇ¿¶ÈΪE=4.0¡Á104N/CµÄÔÈÇ¿µç³¡£¬ÈçͼËùʾ£¬ÏÖ¶Ôľ°åÊ©¼ÓһˮƽÏòÓÒµÄÀ­Á¦F£®È¡g=10m/s2£¬Çó£º

   £¨1£©Ê¹Îï¿é²»µôÏÂÈ¥µÄ×î´óÀ­Á¦F£»

   £¨2£©Èç¹ûÀ­Á¦F=11Nºã¶¨²»±ä£¬Ð¡Îï¿éËùÄÜ»ñµÃµÄ×î´ó¶¯ÄÜ.

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Èçͼ12Ëùʾ£¬³¤L=1.6m£¬ÖÊÁ¿M=3kgµÄľ°å¾²·ÅÔڹ⻬ˮƽÃæÉÏ£¬ÖÊÁ¿m=1kg¡¢

´øµçÁ¿q=+2.5¡Á10-4CµÄС»¬¿é·ÅÔÚľ°åµÄÓҶˣ¬Ä¾°åºÍÎï¿é¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.1£¬ËùÔÚ¿Õ¼ä¼ÓÓÐÒ»¸ö·½ÏòÊúÖ±ÏòÏÂÇ¿¶ÈΪE=4.0¡Á104N/CµÄÔÈÇ¿µç³¡£¬ÈçͼËùʾ£¬ÏÖ¶Ôľ°åÊ©¼ÓһˮƽÏòÓÒµÄÀ­Á¦F£®È¡g=10m/s2£¬Çó£º

   £¨1£©Ê¹Îï¿é²»µôÏÂÈ¥µÄ×î´óÀ­Á¦F£»

   £¨2£©Èç¹ûÀ­Á¦F=11Nºã¶¨²»±ä£¬Ð¡Îï¿éËùÄÜ»ñµÃµÄ×î´ó¶¯ÄÜ.

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010-2011ѧÄ긣½¨Ê¡¸ßÈýÉÏѧÆÚÆÚÖп¼ÊÔÎïÀíÊÔ¾í ÌâÐÍ£º¼ÆËãÌâ

Èçͼ12Ëùʾ£¬³¤L=1.6m£¬ÖÊÁ¿M=3kgµÄľ°å¾²·ÅÔڹ⻬ˮƽÃæÉÏ£¬ÖÊÁ¿m=1kg¡¢

´øµçÁ¿q=+2.5¡Á10-4CµÄС»¬¿é·ÅÔÚľ°åµÄÓҶˣ¬Ä¾°åºÍÎï¿é¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=0.1£¬ËùÔÚ¿Õ¼ä¼ÓÓÐÒ»¸ö·½ÏòÊúÖ±ÏòÏÂÇ¿¶ÈΪE=4.0¡Á104N/CµÄÔÈÇ¿µç³¡£¬ÈçͼËùʾ£¬ÏÖ¶Ôľ°åÊ©¼ÓһˮƽÏòÓÒµÄÀ­Á¦F£®È¡g=10m/s2£¬Çó£º

   £¨1£©Ê¹Îï¿é²»µôÏÂÈ¥µÄ×î´óÀ­Á¦F£»

   £¨2£©Èç¹ûÀ­Á¦F=11Nºã¶¨²»±ä£¬Ð¡Îï¿éËùÄÜ»ñµÃµÄ×î´ó¶¯ÄÜ.

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸