¾«Ó¢¼Ò½ÌÍøÒ»¶Ë·â±ÕµÄԲͲ£¬ÓÉÁ½¸ö½ØÃæ»ýÏàͬµÄ»îÈûAºÍB¸ô³ÉÁ½²¿·Ö¿Õ¼ä£¬¸÷·â±Õ×ÅÒ»¶¨Á¿µÄÆøÌ壬»îÈûAºÍB¸úԲͲ½ôÃܽӴ¥£¬±íÃæ¹â»¬¶ø²»Â©Æø£¬ÖÐÐÄÓÃÒ»¸ùÇᵯ»ÉÏàÁ¬½Ó£¬»îÈûBµÄÖÊÁ¿ÊÇ20kg£¬µ±Ô²Í²¿ª¿ÚÏòÉÏÖ±Á¢·ÅÖÃʱ£¬µ¯»ÉÇ¡ÎÞÐα䣬³¤Îª25.5cm£¬»îÈûBÓëԲͲµ×Ïà¾à20cm£®µ±Ô²Í²Ë®Æ½·ÅÖÃʱ£¬»îÈûBÓëԲͲµ×Ïà¾à26cm£¬»îÈûA¡¢B¼äÏà¾à27.5cm£¬ÈçͼËùʾ£®¼ÙÉè´óÆø¶Ô»îÈûAµÄѹÁ¦Îª1000N£¬ÆøÌåζȲ»±ä£¬È¡g=10m/s2£¬ÊÔÇó£º
£¨1£©»îÈûAµÄÖÊÁ¿£»
£¨2£©µ¯»ÉµÄ¾óǿϵÊý£®
·ÖÎö£ºÊúÖ±·ÅÖÃʱ£¬Ð´³öÆøÌåA¡¢BµÄѹǿ¡¢Ìå»ý±í´ïʽ£»Ë®Æ½·Àֹʱ£¬ÔÙ´Îд³öÆøÌåA¡¢BµÄѹǿ¡¢Ìå»ý±í´ïʽ£»È»ºó¸ù¾Ý²£Òâ¶ú¶¨ÂÉÁз½³Ì£»×îºóÁªÁ¢Çó½â¼´¿É£®
½â´ð£º½â£º£¨1£©Éè»îÈûµÄ½ØÃæ»ýΪS£¬Ô²Í²¿ª¿ÚÏòÉÏ·ÅÖÃʱ£¬»îÈûBÒÔϵÄÆøÌåµÄѹǿΪ£º
P1=P0+
(mA+mB)g
S

Á½»îÈû¼äµÄÆøÌåµÄѹǿΪ£º
P2=P0+
mAg
S

ԲͲˮƽ·ÅÖÃʱ£º
P1¡ä=P0        
P2¡ä=P0+
K¡÷l
S

¸ù¾ÝÌâÒ⣬ÓУº
P0=
F
S
=
1000
S

¶ÔB²¿·ÖÆøÌ壬Óɲ£Òâ¶ú¶¨ÂÉ£¬µÃµ½£º
p1V1=p1¡äV1¡ä
¼´p1LB =p1¡äLB¡ä
AµÄÖÊÁ¿£ºmA=10 kg
£¨2£©¶ÔA²¿·ÖÆøÌ壬Óɲ£Òâ¶ú¶¨ÂÉ£¬µÃµ½£º
 p2V2=p2¡äV2¡ä
¼´£ºp2LA =p2¡äLA¡ä
½âµÃ¾óǿϵÊýΪ£ºK=103 N/m 
´ð£º£¨1£©»îÈûAµÄÖÊÁ¿Îª10kg£»
£¨2£©µ¯»ÉµÄ¾óǿϵÊýΪ103N/m£®
µãÆÀ£º±¾Ìâ¹Ø¼üÏȱíʾ³öÁ½¶Ë·â±ÕÆøÌåµÄÆøѹºÍÌå»ýµÄ±í´ïʽ£¬È»ºó¸ù¾Ý²£Òâ¶ú¶¨ÂÉÁÐʽºóÁªÁ¢Çó½â£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º038

Ò»¶Ë·â±ÕµÄԲͲ£¬ÓÉÁ½¸ö½ØÃæ»ýÏàͬµÄ»îÈûAºÍB¸ô³ÉÁ½²¿·Ö¿Õ¼ä£¬¸÷·â±Õ×ÅÒ»¶¨Á¿µÄÆøÌ壬»îÈûAºÍB¸úԲͲ½ôÃܽӴ¥£¬±íÃæ¹â»¬¶ø²»Â©Æø£¬ÖÐÐÄÓÃÒ»¸ùÇᵯ»ÉÏàÁ¬½Ó£¬»îÈûBµÄÖÊÁ¿ÊÇ20 kg£¬µ±Ô²Í²¿ª¿ÚÏòÉÏÖ±Á¢·ÅÖÃʱ£¬µ¯»ÉÇ¡ÎÞÐα䣬³¤Îª25.5 cm£¬»îÈûBÓëԲͲµ×Ïà¾à20 cm¡£µ±Ô²Í²Ë®Æ½·ÅÖÃʱ£¬»îÈûBÓëԲͲµ×Ïà¾à26 cm£¬»îÈûA¡¢B¼äÏà¾à27.5 cm£¬Èçͼ2Ëùʾ¡£¼ÙÉè´óÆø¶Ô»îÈûAµÄѹÁ¦Îª1000N£¬ÆøÌåζȲ»±ä£¬È¡g = 10 m/s2 £¬ÊÔÇó£º

£¨1£©»îÈûAµÄÖÊÁ¿£»

£¨2£©µ¯»ÉµÄ¾óǿϵÊý¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£ºÎïÀí½ÌÑÐÊÒ ÌâÐÍ£º038

Ò»¶Ë·â±ÕµÄԲͲ£¬ÓÉÁ½¸ö½ØÃæ»ýÏàͬµÄ»îÈûAºÍB¸ô³ÉÁ½²¿·Ö¿Õ¼ä£¬¸÷·â±Õ×ÅÒ»¶¨Á¿µÄÆøÌ壬»îÈûAºÍB¸úԲͲ½ôÃܽӴ¥£¬±íÃæ¹â»¬¶ø²»Â©Æø£¬ÖÐÐÄÓÃÒ»¸ùÇᵯ»ÉÏàÁ¬½Ó£¬»îÈûBµÄÖÊÁ¿ÊÇ20 kg£¬µ±Ô²Í²¿ª¿ÚÏòÉÏÖ±Á¢·ÅÖÃʱ£¬µ¯»ÉÇ¡ÎÞÐα䣬³¤Îª25.5 cm£¬»îÈûBÓëԲͲµ×Ïà¾à20 cm¡£µ±Ô²Í²Ë®Æ½·ÅÖÃʱ£¬»îÈûBÓëԲͲµ×Ïà¾à26 cm£¬»îÈûA¡¢B¼äÏà¾à27.5 cm£¬Èçͼ2Ëùʾ¡£¼ÙÉè´óÆø¶Ô»îÈûAµÄѹÁ¦Îª1000N£¬ÆøÌåζȲ»±ä£¬È¡g = 10 m/s2 £¬ÊÔÇó£º

£¨1£©»îÈûAµÄÖÊÁ¿£»

£¨2£©µ¯»ÉµÄ¾óǿϵÊý¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»¶Ë·â±ÕµÄԲͲ£¬ÓÉÁ½¸ö½ØÃæ»ýÏàͬµÄ»îÈûAºÍ B¸ô³ÉÁ½²¿·Ö¿Õ¼ä£¬¸÷·â±Õ×ÅÒ»¶¨Á¿µÄÆøÌ壬»îÈûAºÍB¸úԲͲ½ôÃܽӴ¥£¬±íÃæ¹â»¬¶ø²»Â©Æø£¬ÖÐÐÄÓÃÒ»¸ùÇᵯ»ÉÏàÁ¬½Ó£¬»îÈûBµÄÖÊÁ¿ÊÇ20kg£¬µ±Ô²Í²¿ª¿ÚÏòÉÏÖ±Á¢·ÅÖÃʱ£¬µ¯»ÉÇ¡ºÃûÓÐÐα䣬³¤Îª25.5cm£¬»îÈûBÓëԲͲµ×Ïà¾à20cm¡£µ±Ô²Í²Ë®Æ½·ÅÖÃʱ£¬»îÈûBÓëԲͲµ×Ïà¾à26cm£¬»îÈûA¡¢B¼äÏà¾à27.5cm£¬ ÈçͼËùʾ¡£¼ÙÉè´óÆø¶Ô»îÈûAµÄѹÁ¦Îª1000N£¬ÆøÌåµÄζȲ»±ä£¬gÈ¡10m/¡£ÊÔÇ󣺻îÈûAµÄÖÊÁ¿¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»¶Ë·â±ÕµÄԲͲÓÉ»îÈûA¡¢B·Ö³ÉM¡¢NÁ½¸öÃܱղ¿·Ö£¬Á½²¿·Ö¸÷·â±Õ×ÅÒ»¶¨ÖÊÁ¿µÄ¿ÕÆø£¬Á½»îÈûÓëͲ±ÚÎÞĦ²Áµ«ÃÜ·âÁ¼ºÃ£¬Á½»îÈûºñ¶È²»¼Æ£¬ÖмäÓÃÇáÖʵ¯»ÉÏàÁ¬£¬»îÈûBµÄÖÊÁ¿Îª20kg¡£µ±Ô²Í²¿ª¿ÚÏòÉÏÊúÖ±·ÅÖÃʱ£¬µ¯»ÉµÄ³¤¶ÈΪԭ³¤l0=25.5cm¡£»îÈûBÓëԲͲµ×Ïà¾à20cm £¬ÈçͼËùʾ¡£µ±Ô²Í²²àÃæˮƽ·ÅÖÃʱ£¬BÓëԲͲµ×Ïà¾àΪ26cm£¬¶øÁ½»îÈûÏà¾àΪ27.5cm¡£¼ÙÉè´óÆø¶Ô»îÈûAµÄѹÁ¦ÎªF0=1000N£¬Í²ÄÚÆøÌåζȲ»±ä£¬gÈ¡10m/£¬Çó»îÈûAµÄÖÊÁ¿ºÍµ¯»ÉµÄ¾¢¶ÈϵÊýk¡£

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸