ÌâÄ¿ÄÚÈÝ
¸úµØÇòÒ»Ñù£¬ÔÚÆäËûËùÓÐÐÇÇòÉÏ£¬ÎïÌåÒ²»áÓÉÓÚÐÇÇò¶ÔËüµÄÎüÒý¶øÊܵ½Ö¸Ïò¸ÃÐÇÇòÇòÐĵÄÁ¦£®Èç¹ûÎÒÃÇ°ÑÕâЩÁ¦Ò²½ÐÖØÁ¦µÄ»°£¬ÄÇô£¬ÎïÌåÔÚijÐÇÇòÉÏÊܵ½µÄÖØÁ¦²»½ö¸úÎïÌå±¾ÉíµÄÖÊÁ¿Óйأ¬»¹¸ú¸ÃÐÇÇòµÄÖÊÁ¿¡¢°ë¾¶µÈÒòËØÓйأ®ÓÉÓÚ²»Í¬µÄÐÇÇòÖÊÁ¿ºÍ°ë¾¶¸÷²»Ïàͬ£¬ËùÒÔ£¬Í¬Ò»¸öÎïÌåÔÚ²»Í¬ÐÇÇòÉÏÊܵ½µÄÖØÁ¦²¢²»Ïàͬ£®Ï±íÁгöµÄÊÇÖÊÁ¿Îª1kgµÄÎïÌ壬ÔÚ²»Í¬ÐÇÇòÉÏÊܵ½µÄÖØÁ¦£®
Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚÔÂÇòÉÏÄÜ·ñÓõ¯»É²âÁ¦¼Æ²âÎïÌåµÄÖØÁ¦£¿
£¨2£©Í¬Ò»¸öÎïÌå·ÅÔÚ²»Í¬ÐÇÇòÉÏ£¬ÖÊÁ¿
£¨3£©ÓÉÉϱí¿ÉÖª£¬Í¬Ò»ÎïÌå·ÅÔÚ
£¨4£©Ò»ÓԱÖÊÁ¿Îª72kg£¬Õâ¸öÓԱÔÚµØÇòÉÏ×î¶àÄܾÙÆð100kgµÄÎïÌ壬ÈôÓԱµ½´ï»ðÐÇÉÏ£¬ÄÇôËûÔÚ»ðÐÇÉÏ×î¶àÄܾÙÆð¶à´óÖÊÁ¿µÄÎïÌ壿
ÐÇÇò | ÔÂÇò | Ë®ÐÇ | ½ðÐÇ | µØÇò | »ðÐÇ | ľÐÇ | ÍÁÐÇ | ÌìÍõÐÇ | º£ÍõÐÇ |
ÖØÁ¦/N | 1.62 | 3.60 | 8.50 | 9.80 | 3.76 | 22.9 | 9.05 | 8.30 | 11.0 |
£¨1£©ÔÚÔÂÇòÉÏÄÜ·ñÓõ¯»É²âÁ¦¼Æ²âÎïÌåµÄÖØÁ¦£¿
¿ÉÒÔ
¿ÉÒÔ
£¨2£©Í¬Ò»¸öÎïÌå·ÅÔÚ²»Í¬ÐÇÇòÉÏ£¬ÖÊÁ¿
²»¸Ä±ä
²»¸Ä±ä
£¬ÖØÁ¦¸Ä±ä
¸Ä±ä
£»£¨Ìî¡°¸Ä±ä¡±¡¢¡°²»¸Ä±ä¡±£©£¨3£©ÓÉÉϱí¿ÉÖª£¬Í¬Ò»ÎïÌå·ÅÔÚ
ľ
ľ
ÐÇÊܵ½µÄÖØÁ¦×î´ó£¬º£ÍõÐÇÉÏg=11.0N/kg£¬Ëü±íʾµÄÎïÀíÒâÒåÊÇÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N
ÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N
£®£¨4£©Ò»ÓԱÖÊÁ¿Îª72kg£¬Õâ¸öÓԱÔÚµØÇòÉÏ×î¶àÄܾÙÆð100kgµÄÎïÌ壬ÈôÓԱµ½´ï»ðÐÇÉÏ£¬ÄÇôËûÔÚ»ðÐÇÉÏ×î¶àÄܾÙÆð¶à´óÖÊÁ¿µÄÎïÌ壿
·ÖÎö£º£¨1£©¸ù¾Ýµ¯»É²âÁ¦¼ÆµÄ¹¤×÷ÔÀí·ÖÎö´ðÌ⣬µ¯»É²âÁ¦¼ÆµÄÔÀíÊÇ£º
ÔÚÒ»¶¨ÏÞ¶ÈÄÚ£¬µ¯»ÉÉ쳤µÄ³¤¶È¸úËüÊܵ½µÄÀÁ¦³ÉÕý±È£®
£¨2£©ÖÊÁ¿ÊÇÎïÌå±¾ÉíµÄ¹ÌÓÐÊôÐÔ£¬ÓëÎïÌåËù´¦µÄλÖÃÎ޹أ»ÎïÌåÓÉÓÚÊܵ½ÐÇÇòµÄÎüÒý¶øÊܵ½µÄÁ¦ÊÇÖØÁ¦£¬ËæÐÇÇòÎüÒýÁ¦µÄ²»Í¬£¬ÎïÌåÊܵ½µÄÖØÁ¦²»Í¬£®
£¨3£©·ÖÎö±íÖÐÊý¾Ý£¬¿ÉÖªÎïÌåÔÚÄĸöÐÇÇòÉÏÊܵ½µÄÖØÁ¦×î´ó£»¸ù¾Ý¶ÔgÎïÀíÁ¿ÒâÒåµÄÕÆÎÕ·ÖÎö´ðÌ⣮
£¨4£©ÓԱµÄ×î´ó¾ÙÁ¦ÊDz»±äµÄ£¬¸ù¾ÝÓԱÔÚµØÇòÉϾÙÆðµÄÎïÌ壬Çó³öÓԱµÄ¾ÙÁ¦£¬È»ºóÇó³öËûÔÚ»ðÐÇÉÏÄܾÙÆðµÄÎïÌåÖÊÁ¿£®
ÔÚÒ»¶¨ÏÞ¶ÈÄÚ£¬µ¯»ÉÉ쳤µÄ³¤¶È¸úËüÊܵ½µÄÀÁ¦³ÉÕý±È£®
£¨2£©ÖÊÁ¿ÊÇÎïÌå±¾ÉíµÄ¹ÌÓÐÊôÐÔ£¬ÓëÎïÌåËù´¦µÄλÖÃÎ޹أ»ÎïÌåÓÉÓÚÊܵ½ÐÇÇòµÄÎüÒý¶øÊܵ½µÄÁ¦ÊÇÖØÁ¦£¬ËæÐÇÇòÎüÒýÁ¦µÄ²»Í¬£¬ÎïÌåÊܵ½µÄÖØÁ¦²»Í¬£®
£¨3£©·ÖÎö±íÖÐÊý¾Ý£¬¿ÉÖªÎïÌåÔÚÄĸöÐÇÇòÉÏÊܵ½µÄÖØÁ¦×î´ó£»¸ù¾Ý¶ÔgÎïÀíÁ¿ÒâÒåµÄÕÆÎÕ·ÖÎö´ðÌ⣮
£¨4£©ÓԱµÄ×î´ó¾ÙÁ¦ÊDz»±äµÄ£¬¸ù¾ÝÓԱÔÚµØÇòÉϾÙÆðµÄÎïÌ壬Çó³öÓԱµÄ¾ÙÁ¦£¬È»ºóÇó³öËûÔÚ»ðÐÇÉÏÄܾÙÆðµÄÎïÌåÖÊÁ¿£®
½â´ð£º½â£º£¨1£©ÔÚÔÂÇòÉÏ£¬µ¯»É±¾ÉíµÄÐÔÖʲ»±ä£¬ÔÚµ¯ÐÔÏÞ¶ÈÄÚ£¬µ¯»ÉµÄÉ쳤ÓëÊܵ½µÄÀÁ¦³ÉÕý±È£¬Òò´ËÔÚÔÂÇòÉÏ£¬¿ÉÒÔÓõ¯»É²âÁ¦¼Æ²âÎïÌåµÄÖØÁ¦£®
£¨2£©ÖÊÁ¿ÊÇÎïÌåµÄ¹ÌÓÐÊôÐÔ£¬²»ËæÎïÌåËù´¦Î»Öõĸıä¶ø±ä»¯£¬Í¬Ò»¸öÎïÌå·ÅÔÚ²»Í¬ÐÇÇòÉÏ£¬ÖÊÁ¿²»¸Ä±ä£»ÓɱíÖÐÊý¾Ý¿ÉÖª£¬ÎïÌåÔÚ²»Í¬µÄÐÇÇòÉÏÊܵ½µÄÖØÁ¦¸Ä±ä£®
£¨3£©ÓɱíÖÐÊý¾Ý¿ÉÖª£¬Í¬Ò»ÎïÌåÔÚľÐÇÉÏÊܵ½µÄÖØÁ¦×î´ó£»
º£ÍõÐÇÉÏg=11.0N/kg£¬Ëü±íʾµÄÎïÀíÒâÒåÊÇ£ºÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N£®
£¨4£©ÔÚµØÇòÉÏ100kgµÄÎïÌåÊܵ½µÄÖØÁ¦Îª100kg¡Á9.80N/kg=980N£¬¾ÙÆðÖØÎïʱ£¬
ÓԱ¶ÔÎïÌåµÄÖ§³ÖÁ¦µÈÓÚÎïÌåÖØÁ¦£¬Ôò¸ÃÓԱµÄ×î´ó¾ÙÁ¦F=980N£»
ËüÔÚ»ðÐÇÉÏÄܾÙÆðµÄ×î´óÎïÌåÖÊÁ¿m=
=
=
¡Ö260.6kg£®
¹Ê´ð°¸Îª£º£¨1£©¿ÉÒÔ£»£¨2£©²»¸Ä±ä£»¸Ä±ä£»
£¨3£©Ä¾£»ÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N£»
£¨4£©¸ÃÓԱÔÚ»ðÐÇÉÏ×î¶àÄܾÙÆð260.6kgµÄÎïÌ壮
£¨2£©ÖÊÁ¿ÊÇÎïÌåµÄ¹ÌÓÐÊôÐÔ£¬²»ËæÎïÌåËù´¦Î»Öõĸıä¶ø±ä»¯£¬Í¬Ò»¸öÎïÌå·ÅÔÚ²»Í¬ÐÇÇòÉÏ£¬ÖÊÁ¿²»¸Ä±ä£»ÓɱíÖÐÊý¾Ý¿ÉÖª£¬ÎïÌåÔÚ²»Í¬µÄÐÇÇòÉÏÊܵ½µÄÖØÁ¦¸Ä±ä£®
£¨3£©ÓɱíÖÐÊý¾Ý¿ÉÖª£¬Í¬Ò»ÎïÌåÔÚľÐÇÉÏÊܵ½µÄÖØÁ¦×î´ó£»
º£ÍõÐÇÉÏg=11.0N/kg£¬Ëü±íʾµÄÎïÀíÒâÒåÊÇ£ºÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N£®
£¨4£©ÔÚµØÇòÉÏ100kgµÄÎïÌåÊܵ½µÄÖØÁ¦Îª100kg¡Á9.80N/kg=980N£¬¾ÙÆðÖØÎïʱ£¬
ÓԱ¶ÔÎïÌåµÄÖ§³ÖÁ¦µÈÓÚÎïÌåÖØÁ¦£¬Ôò¸ÃÓԱµÄ×î´ó¾ÙÁ¦F=980N£»
ËüÔÚ»ðÐÇÉÏÄܾÙÆðµÄ×î´óÎïÌåÖÊÁ¿m=
G»ð |
g»ð |
F |
g»ð |
980N |
3.76N/kg |
¹Ê´ð°¸Îª£º£¨1£©¿ÉÒÔ£»£¨2£©²»¸Ä±ä£»¸Ä±ä£»
£¨3£©Ä¾£»ÖÊÁ¿ÊÇ1kgµÄÎïÌåÊܵ½µÄÖØÁ¦ÊÇ11.0N£»
£¨4£©¸ÃÓԱÔÚ»ðÐÇÉÏ×î¶àÄܾÙÆð260.6kgµÄÎïÌ壮
µãÆÀ£º±¾ÌâÄѶȲ»´ó£¬ÖªµÀµ¯»É²âÁ¦¼ÆµÄÔÀí¡¢ÎïÌåÖÊÁ¿ÓëÖØÁ¦¼äµÄ¹Øϵ¡¢ÈÏÕæ·ÖÎö±íÖÐÊý¾Ý£¬¼´¿ÉÕýÈ·½âÌ⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿