Question

16£®Ð¡Çò´Ó¸ß´¦ÏÂÂäµ½ÊúÖ±·ÅÖõÄÇᵯ»ÉÉÏ£¨Èçͼ¼×£©£¬ÔÚ¸Õ½Ó´¥Çᵯ»ÉµÄ˲¼ä£¨ÈçͼÒÒ£©£¬ËÙ¶ÈΪ5m/s£®½«µ¯»ÉѹËõµ½×î¶Ì£¨Èçͼ±û£©µÄÕû¸ö¹ý³ÌÖУ¬Ð¡ÇòµÄËÙ¶ÈvºÍµ¯»ÉËõ¶ÌµÄ³¤¶È¡÷LÖ®¼äµÄ¹ØϵÈçͼ¶¡Ëùʾ£¬ÆäÖÐAΪÇúÏßµÄ×î¸ßµã£®ÒÑÖª¸ÃÇᵯ»ÉÿÊܵ½0.2Å£µÄѹÁ¦¾ÍËõ¶Ì1ÀåÃ×£¬²¢ÇÒÇᵯ»ÉÔÚÊܵ½×²»÷µ½Ñ¹Ëõµ½×î¶ÌµÄÕû¸ö¹ý³ÌÖÐʼÖÕ·¢Éúµ¯ÐÔÐα䣮

£¨1£©´ÓСÇò½Ó´¥µ¯»Éµ½½«µ¯»ÉѹËõÖÁ×î¶ÌµÄ¹ý³ÌÖУ¬Ð¡Çò¶¯Äܵı仯Çé¿öÊÇÏȱä´óºó±äС£¬Ð¡Çò»úеÄܵı仯Çé¿öÊDZäС£®
£¨2£©ÊµÑéÖÐËùÓÃСÇòµÄÖÊÁ¿Îª0.1kg£¬È«¹ý³ÌÖУ¬µ¯»ÉÖе¯Á¦µÄ×î´óֵΪ8.14N£®
£¨3£©Èçͼ£¬µ±µ¯»ÉµÄѹËõÁ¿×î´óʱ£¬Ð¡ÇòµÄËÙ¶ÈΪ0£¬´Ëʱ£¬Ð¡Çò´¦ÓÚ·Çƽºâ£¨Ìƽºâ¡±»ò¡°·Çƽºâ¡±£©Ì¬£®

Answer 1

·ÖÎö 1¡¢ÓÉͼÏó¿ÉÖª£¬Ð¡ÇòËÙ¶ÈÏȱä´ó£¬ºó±äС£®µ¯»É·¢ÉúÐαä´Ó¶ø¾ßÓе¯ÐÔÊÆÄÜ£®
2¡¢ÔÚÔ˶¯¹ý³ÌÖÐСÇòÊÜÖØÁ¦Ó뵯»ÉµÄµ¯Á¦£¬µ±Á½Á¦´óСÏàµÈʱ£¬Ð¡ÇòËÙ¶È×î´ó£¬´Ëʱµ¯Á¦ÓëÖØÁ¦ÊÇÒ»¶ÔƽºâÁ¦£»ÓÉͼÏó×ø±ê¿ÉÖ±½ÓÇóµÃµ¯»ÉµÄѹËõÁ¿Ó뵯Á¦£®

½â´ð ½â£º£¨1£©ÓÉͼÏó¿´³ö£ºÔÚСÇò¸Õ¿ªÊ¼×²»÷µ¯»Éµ½µ¯»É±»Ñ¹Ëõµ½×î¶ÌµÄ¹ý³ÌÖУ¬Ð¡ÇòËÙ¶ÈÏȱä´óºó±äС£®Ð¡Çò¶¯ÄÜÏȱä´óºó±äС£»Ö»Óж¯Äܺ͵¯ÐÔÊÆÄܵĸı䣬»úеÄÜÊغ㣮
£¨2£©ÔÚСÇòÏòÏÂÔ˶¯¹ý³ÌÖУ¬ÊÜÊúÖ±ÏòÉϵĵ¯»ÉµÄµ¯Á¦£¬ÊúÖ±ÏòϵÄÖØÁ¦£®¿ªÊ¼Ê±£¬ÖØÁ¦´óÓÚµ¯Á¦£¬ºÏÁ¦ÏòÏ£¬Ð¡ÇòËÙ¶ÈÔ½À´Ô½´ó£®
Ë浯»ÉѹËõÁ¿µÄÔö´ó£¬µ¯Á¦Ô½À´Ô½´ó£¬µ±µ¯Á¦ÓëÖØÁ¦ÏàµÈʱ£¬Á½Á¦ÊÇÒ»¶ÔƽºâÁ¦£¬ºÏÁ¦ÎªÁ㣮СÇòÔÙÏòÏÂÔ˶¯£¬µ¯Á¦´óÓÚÖØÁ¦£¬
ºÏÁ¦ÏòÏ£¬Ð¡ÇòËٶȼõС£®Óɴ˿ɼû£¬µ±ÖØÁ¦GÓ뵯Á¦FÊÇÒ»¶ÔƽºâÁ¦Ê±£¬Ð¡ÇòËÙ¶È×î´ó£®´Ëʱ£¬ÓÉͼ¿ÉÖªµ¯»ÉµÄѹËõÁ¿¡÷L=5cm£¬
ÓÉƽºâÌõ¼þµÃ£»G=F=0.2N/cm¡Á5cm=1N£®
СÇòµÄÖÊÁ¿Îª£ºm=$\frac{G}{g}$=$\frac{1N}{10N/kg}$=0.1kg£»
ÓÉͼ¿ÉÖª£¬µ±Ð¡ÇòËÙ¶ÈΪÁãʱ£¬µ¯»ÉµÄѹËõÁ¿×î´óΪL=40.7cm=0.407m£¬´ËʱСÇòËùÊܵ¯»ÉµÄµ¯Á¦Fµ¯=0.2N/cm¡Á40.7cm=8.14N£®
£¨3£©ÔÚСÇòÏòÏÂÔ˶¯¹ý³ÌÖУ¬ÊÜÊúÖ±ÏòÉϵĵ¯»ÉµÄµ¯Á¦£¬ÊúÖ±ÏòϵÄÖØÁ¦£®¿ªÊ¼Ê±£¬ÖØÁ¦´óÓÚµ¯Á¦£¬ºÏÁ¦ÏòÏ£¬Ð¡ÇòËÙ¶ÈÔ½À´Ô½´ó£®
Ë浯»ÉѹËõÁ¿µÄÔö´ó£¬µ¯Á¦Ô½À´Ô½´ó£¬µ±µ¯Á¦ÓëÖØÁ¦ÏàµÈʱ£¬Á½Á¦ÊÇÒ»¶ÔƽºâÁ¦£¬ºÏÁ¦ÎªÁ㣮СÇòÔÙÏòÏÂÔ˶¯£¬µ¯Á¦´óÓÚÖØÁ¦£¬
µ±µ¯»ÉµÄѹËõÁ¿×î´óʱ£¬Ð¡ÇòµÄËÙ¶ÈΪ0£¬´Ëʱ£¬µ¯Á¦´óÓÚÖØÁ¦£¬Ð¡Çò´¦ÓÚ·Çƽºâ״̬£®
¹Ê´ð°¸Îª£º£¨1£©Ïȱä´óºó±äС£»±äС£»£¨2£©0.1£»8.14£»£¨3£©·Çƽºâ£®

µãÆÀ ½âÌâµÄ¹Ø¼ü£¨1£©¶Á¶®Í¼£¬ÓÉͼ»ñÈ¡µ¯»ÉѹËõÁ¿£¬Ð¡ÇòËٶȱ仯µÄÐÅÏ¢£®£¨2£©·ÖÎöСÇòµÄÔ˶¯¹ý³Ì£¬·ÖÎöµ¯Á¦µÄ±ä»¯Çé¿ö£®