½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî4 m¡£¹Ù±øÃÇÓÃͼ20ËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ2¡Ál0Ò»3m3£¬ÔÚÔÈËÙÌáÆðÍ°ÔϹý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îªl0 N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35 N(Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»Ö­£¬g=10 N£¯㎏)¡£Çó£º

£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ£»

£¨2£©½ðÊôÍ°µÄÖÊÁ¿£»

£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȡ£

£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿP==4¡Á104Pa;(2)Í°ÖÐË®µÄÖÊÁ¿=2kg,G=mg=20N, ,(3)×°ÂúË®µÄÍ°Êܵ½µÄ¸¡Á¦F=F2-F1=35N-10N=25N£¬£¬½ðÊô¿éµÄÌå»ý£ºV½ðÊô=0.5¡Á10-3m3,½ðÊôµÄÃܶȡ£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍø½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî4m£®¹Ù±øÃÇÓÃͼËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ2¡Ál0-3m3£¬ÔÚÔÈËÙÌáÆðÍ°ÔϹý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îªl0N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35N£¨Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»Ö­£¬g=10N/©K£©£®Çó£º
£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ£»
£¨2£©½ðÊôÍ°µÄÖÊÁ¿£»
£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º×¨ÏîÌâ ÌâÐÍ£º¼ÆËãÌâ

½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬ ½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî 4m¡£¹Ù±øÃÅÓÃÈçͼËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ 2¡Á10-3m3£¬ÔÚÔÈËÙÌáÆðÍ°µÄ¹ý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îª10N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35N£¨Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»¼Æ£¬g=10N/kg£©¡£Çó£º
£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ¡£
£¨2£©½ðÊôÍ°µÄÖÊÁ¿¡£
£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȡ£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º¡¶µÚ14Õ ѹǿÓ븡Á¦¡·2013Äêµ¥Ôª²âÊÔ¾í£¨»Æ¸ÔÊйêɽÖÐÐÄѧУ£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî4m£®¹Ù±øÃÇÓÃͼËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ2×l0-3m3£¬ÔÚÔÈËÙÌáÆðÍ°ÔϹý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îªl0N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35N£¨Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»Ö­£¬g=10N/©K£©£®Çó£º
£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ£»
£¨2£©½ðÊôÍ°µÄÖÊÁ¿£»
£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2012ÄêËÄ´¨Ê¡Ò˱öÊÐÒ˱öÏؾÅÄ꼶ÎïÀí¾ºÈüÊÔ¾í£¨³õÈü£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî4m£®¹Ù±øÃÇÓÃͼËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ2×l0-3m3£¬ÔÚÔÈËÙÌáÆðÍ°ÔϹý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îªl0N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35N£¨Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»Ö­£¬g=10N/©K£©£®Çó£º
£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ£»
£¨2£©½ðÊôÍ°µÄÖÊÁ¿£»
£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2012ÄêÁÉÄþÊ¡ÉòÑôÊÐÌúÎ÷ÇøÖп¼ÎïÀíһģÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

½ñÄê´º£¬ÎÒ¹úÎ÷Äϲ¿·ÖµØÇø·¢ÉúÁËÌØ´óºµÔÖ£¬½â·Å¾üij²¿ÔÚÒ»¸öºÜÉîµÄɽ¶´ÖÐÕÒµ½ÁËˮԴ£¬Ë®Éî4m£®¹Ù±øÃÇÓÃͼËùʾµÄ×°ÖÃÌáȡһͰˮ½øÐгéÑù¼ì²â£¬ÒÑÖª½ðÊôÍ°µÄÈÝ»ýΪ2×l0-3m3£¬ÔÚÔÈËÙÌáÆðÍ°ÔϹý³ÌÖУ¬Í°Â¶³öË®ÃæÇ°µÄÀ­Á¦Îªl0N£¬Íêȫ¶³öË®Ãæºó£¬À­Á¦±äΪ35N£¨Éþ×ÓÓ뻬ÂÖ¼äµÄĦ²Á¼°ÉþÖز»Ö­£¬g=10N/©K£©£®Çó£º
£¨1£©Ë®µ×Êܵ½Ë®µÄѹǿ£»
£¨2£©½ðÊôÍ°µÄÖÊÁ¿£»
£¨3£©½ðÊôÍ°µÄ½ðÊôÃܶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸