一大一小的两个铁球，为什么会同时落地 两个大小不同的铁球为什么能同时落地
\u4e3a\u4ec0\u4e48\u4e24\u4e2a\u94c1\u7403\u4f1a\u540c\u65f6\u7740\u5730\uff1f\u6211\u7528\u7269\u7406\u516c\u5f0f\u4f5c\u4e00\u4e2a\u89e3\u91ca\uff0c\u8bbe\u4e24\u4e2a\u94c1\u7403\u7684\u8d28\u91cf\u5206\u522b\u4e3am1,m2,\u4e0b\u843d\u7684\u52a0\u901f\u5ea6\u5206\u522b\u4e3aa1,a2,\u91cd\u529b\u52a0\u901f\u5ea6\u4e3ag,\u53d7\u5230\u7a7a\u6c14\u7684\u963b\u529b\u5206\u522b\u4e3af1\uff0cf2,\u4e0b\u843d\u7684\u8ddd\u79bb\u4e3as\uff0c\u6839\u636e\u7269\u7406\u77e5\u8bc6,a1=(m1g-f1)/m1,a2=(m2g-f2)/m2,\u7531\u4e8ef1\u548cf2\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\uff0c\u6240\u4ee5a1=g,a2=g,\u4e5f\u5c31\u662f\u4e24\u94c1\u7403\u7684\u52a0\u901f\u5ea6\u76f8\u540c\uff0c\u7531s=(gt*t)/2,\u53ef\u5f97\u4e24\u94c1\u7403\u4e0b\u843d\u7684\u65f6\u95f4\u5206\u522b\u4e3at1=t2=(2s/g)\u7684\u5e73\u65b9\u6839. \u4ece\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u770b\u51fa:\u5728\u7a7a\u6c14\u963b\u529b\u5ffd\u7565\u4e0d\u8ba1\u7684\u60c5\u51b5\u4e0b\uff0c\u7269\u4f53\u4e0b\u843d\u7684\u65f6\u95f4\u4e0e\u7269\u4f53\u7684\u91cd\u91cf\u65e0\u5173\uff0c\u53ea\u4e0e\u4e0b\u843d\u8ddd\u79bb\u548c\u91cd\u529b\u52a0\u901f\u5ea6\u6709\u5173\u3002
\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5728\u771f\u7a7a\u4e2d\u7fbd\u6bdb\u548c\u94c1\u7403\u4e0b\u843d\u901f\u5ea6\u4f1a\u76f8\u540c\u7684\u539f\u56e0\uff0c\u56e0\u4e3a\u5728\u771f\u7a7a\u4e2d\u6ca1\u6709\u7a7a\u6c14\u963b\u529b\u3002 \u4ece\u4ee5\u4e0a\u5206\u6790\u53ef\u4ee5\u770b\u51fa\u4ece\u6bd4\u8428\u659c\u5854\u4e0a\u843d\u4e0b\u7684\u4e24\u4e2a\u94c1\u7403\u662f\u4f1a\u540c\u65f6\u7740\u5730\u7684\uff0c\u81f3\u5c11\u5728\u4eba\u773c\u770b\u6765\u4f1a\u662f\u540c\u65f6\u7740\u5730\u7684\uff0c\u9664\u975e\u5176\u4e2d\u7684\u4e00\u4e2a\u94c1\u7403\u7684\u8d28\u91cf\u5f88\u5c0f,\u4ee5\u81f3\u7a7a\u6c14\u963b\u529b\u4e0d\u80fd\u5ffd\u7565,\u53c8\u6216\u8005\u4e0b\u843d\u7684\u8ddd\u79bb\u5f88\u957f,\u53c8\u6216\u8005\u8ba1\u65f6\u7cbe\u786e\u5230\u6beb\u79d2\u7ea7\uff0c\u4eba\u4eec\u624d\u4f1a\u53d1\u73b0\u4e24\u4e2a\u94c1\u7403\u4e0d\u4f1a\u540c\u65f6\u7740\u5730\u3002
\u5176\u4ed6\u601d\u8def\uff1a
\u89e3\u91ca\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u7fbd\u6bdb\u548c\u77f3\u5934\u4e0d\u4f1a\u540c\u65f6\u7740\u5730\uff0c\u5927\u5bb6\u77e5\u9053\u6211\u4eec\u751f\u6d3b\u5728\u7a7a\u6c14\u4e2d\uff0c\u5728\u7a7a\u6c14\u4e2d\u8fd0\u52a8\u7684\u7269\u4f53\u90fd\u4f1a\u53d7\u5230\u7a7a\u6c14\u7684\u963b\u529b\uff0c\u7fbd\u6bdb\u548c\u77f3\u5934\u5728\u4e0b\u843d\u8fc7\u7a0b\u4e2d\u4f1a\u53d7\u5230\u7a7a\u6c14\u7684\u963b\u529b\uff0c\u65e2\u7136\u7fbd\u6bdb\u548c\u77f3\u5934\u90fd\u4f1a\u53d7\u5230\u7a7a\u6c14\u963b\u529b\uff0c\u90a3\u4e3a\u4ec0\u4e48\u7fbd\u6bdb\u4f1a\u6bd4\u77f3\u5934\u665a\u7740\u5730\u5462\uff1f\u662f\u4e0d\u662f\u7fbd\u6bdb\u53d7\u5230\u7684\u7a7a\u6c14\u7684\u963b\u529b\u6bd4\u77f3\u5934\u5927\u5462\uff1f
\u5f53\u7136\u4e0d\u662f\uff0c\u5f88\u663e\u7136\u4e00\u5757\u5927\u77f3\u5934\u6bd4\u4e00\u4e2a\u5c0f\u7ed2\u6bdb\u53d7\u7684\u7a7a\u6c14\u7684\u963b\u529b\u8981\u5927\uff0c\u4f46\u5927\u77f3\u5934\u6bd4\u5c0f\u7ed2\u6bdb\u7684\u4e0b\u843d\u8981\u5feb\u5f97\u591a\uff0c\u65e2\u7136\u4e0e\u7a7a\u6c14\u963b\u529b\u5927\u5c0f\u65e0\u5173\uff0c\u90a3\u662f\u4ec0\u4e48\u8ba9\u539f\u56e0\u7fbd\u6bdb\u548c\u77f3\u5934\u4e0d\u4f1a\u540c\u65f6\u7740\u5730\u5462\uff1f\uff0c\u539f\u56e0\u4e0e\u7269\u4f53\u7684\u60ef\u6027\u6709\u5173\uff0c\u901a\u8fc7\u7269\u7406\u77e5\u8bc6\uff0c\u6211\u4eec\u77e5\u9053\u7269\u4f53\u7684\u8d28\u91cf\u8d8a\u5927\uff0c\u7269\u4f53\u7684\u60ef\u6027\u8d8a\u5927\uff0c\u7269\u4f53\u7684\u8fd0\u52a8\u72b6\u6001\u5c31\u8d8a\u96be\u6539\u53d8\uff0c\u5c31\u8c61\u4e00\u4e2a\u4eba\u5f88\u5bb9\u6613\u8ba9\u4e00\u8f86\u884c\u9a76\u7684\u81ea\u884c\u8f66\u505c\u4e0b\u6765\uff0c\u5374\u4e0d\u80fd\u5bf9\u4e00\u8f86\u98de\u9a70\u800c\u6765\u706b\u8f66\u7684\u901f\u5ea6\u6709\u4efb\u4f55\u6539\u53d8\u4e00\u6837,\u8fd9\u4e5f\u662f\u4eba\u4eec\u7528\u87b3\u81c2\u5f53\u8f66\u6765\u5632\u7b11\u522b\u4eba\u81ea\u4e0d\u91cf\u529b\u7684\u539f\u56e0\u3002
\u6211\u4eec\u518d\u6765\u770b\u770b\u7fbd\u6bdb\u548c\u77f3\u5934\u4e0b\u843d\u7684\u60c5\u51b5\uff0c\u7fbd\u6bdb\u548c\u77f3\u5934\u5728\u7a7a\u6c14\u4e2d\u53d7\u5230\u7684\u963b\u529b\u90fd\u662f\u5f88\u5c0f\u7684\uff0c\u8fd9\u79cd\u5f88\u5c0f\u7684\u963b\u529b\u5bf9\u8d28\u91cf\u5f88\u5927\u7684\u77f3\u5934\u8fd0\u52a8\u72b6\u6001\u7684\u6539\u53d8\u7684\u662f\u5fae\u4e4e\u5176\u5fae\u7684\uff0c\u57fa\u672c\u662f\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\uff0c\u4f46\u662f\u5bf9\u8d28\u91cf\u5f88\u5c0f\u7684\u7fbd\u6bdb\u7684\u8fd0\u52a8\u72b6\u6001\u7684\u5f71\u54cd\u5374\u662f\u5de8\u5927\u7684\uff0c\u5f88\u5c0f\u7a7a\u6c14\u963b\u529b\u5c31\u80fd\u8ba9\u7fbd\u6bdb\u4e0b\u843d\u7684\u901f\u5ea6\u53d8\u6162\u5f88\u591a\uff0c\u7a7a\u6c14\u963b\u529b\u5c31\u5982\u540c\u4e00\u4e2a\u4eba\u7684\u529b\u91cf\uff0c\u7fbd\u6bdb\u5c31\u5982\u81ea\u884c\u8f66\uff0c\u77f3\u5934\u5c31\u5982\u706b\u8f66\uff0c\u770b\u5230\u8fd9\u91cc\u76f8\u4fe1\u5927\u5bb6\u660e\u767d\u4e86\u4e3a\u4ec0\u4e48\u7fbd\u6bdb\u548c\u77f3\u5934\u4e3a\u4ec0\u4e48\u4e0d\u4f1a\u540c\u65f6\u7740\u5730\u4e86\u5427\u3002
\u660e\u767d\u4e86\u8fd9\u4e2a\u9053\u7406\uff0c\u5c31\u5f88\u5bb9\u6613\u660e\u767d\u4e24\u4e2a\u94c1\u7403\u4e3a\u4ec0\u4e48\u4f1a\u540c\u65f6\u7740\u5730\u4e86\uff0c\u56e0\u4e3a\u4e24\u4e2a\u90fd\u662f\u94c1\u7403\uff0c\u8d28\u91cf\u76f8\u6bd4\u7a7a\u6c14\u963b\u529b\u800c\u8a00\u90fd\u662f\u5f88\u5927\u7684\uff0c\u5728\u8f83\u77ed\u7684\u8ddd\u79bb\u5185\uff08\u4e00\u5ea7\u5854\u6700\u9ad8\u4e0d\u8fc7\u51e0\u767e\u7c73\uff09\uff0c\u7a7a\u6c14\u963b\u529b\u5bf9\u4e24\u4e2a\u94c1\u7403\u7684\u4e0b\u843d\u7684\u65f6\u95f4\u5f71\u54cd\u662f\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u7684\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u4e24\u4e2a\u94c1\u7403\u4f1a\u540c\u65f6\u7740\u5730\u7684\u539f\u56e0\u3002
\u5c06\u4e24\u4e2a\u94c1\u7403\u4ece\u4e0d\u540c\u7684\u659c\u5761\u653e\u4e0b\uff0c\u7ed3\u679c\u5374\u540c\u65f6\u843d\u5730\uff0c\u8fd9\u662f\u4ec0\u4e48\u539f\u7406\uff1f
绛旓細杩欏氨鏄涓轰粈涔鍦ㄧ湡绌轰腑缇芥瘺鍜岄搧鐞冧笅钀介熷害浼氱浉鍚岀殑鍘熷洜锛屽洜涓哄湪鐪熺┖涓病鏈夌┖姘旈樆鍔涖備粠浠ヤ笂鍒嗘瀽鍙互鐪嬪嚭浠庢瘮钀ㄦ枩濉斾笂钀戒笅鐨勪袱涓搧鐞鏄浼氬悓鏃剁潃鍦扮殑锛岃嚦灏戝湪浜虹溂鐪嬫潵浼氭槸鍚屾椂鐫鍦扮殑锛岄櫎闈炲叾涓殑涓涓搧鐞冪殑璐ㄩ噺寰灏,浠ヨ嚦绌烘皵闃诲姏涓嶈兘蹇界暐,鍙堟垨鑰呬笅钀界殑璺濈寰堥暱,鍙堟垨鑰呰鏃剁簿纭埌姣绾э紝浜轰滑鎵嶄細鍙戠幇涓や釜閾佺悆...
绛旓細璐ㄩ噺鐩稿悓鐨閾佺悆锛閭ｄ箞璐ㄩ噺鏄竴鏍风殑锛岄噸鍔涗篃涓鏍凤紝浣嗘槸鐞冧綋鏉ヨ锛屼綋绉秺澶э紝鍜屾帴瑙﹂潰寰楅潰绉篃瓒婂ぇ锛屾墍鏀跺埌鐨勬懇鎿﹀姏涔熻秺澶э紝鎵浠ラ樆鍔涗篃瓒婂ぇ锛屽洜鑰岃川閲忕浉鍚岋紝灏忛搧鐞浼氶熷害鏇村揩寰楀厛婊氬埌缁堢偣銆
绛旓細灏忕殑鍏堣惤鍦帮紝鍦ㄧ湡绌轰腑鏄悓鏃惰惤鍦扮殑锛屼絾鍦ㄧ┖姘斾腑灏忕殑鍏堣惤鍦帮紝澶х殑鍙楀埌鐨勭┖姘旈樆鍔涘ぇ锛屾墍浠ュ悗钀藉湴
绛旓細鑷敱钀戒綋瀹氬緥鏄傜敤浜庣湡绌虹姸鎬佷笅鐨勶紝閭ｄ箞鍙堝嚭鐜颁竴涓棶棰橈紝鍦ㄨ冭檻浠嬭川闃诲姏鐨勬儏鍐典笅锛屾瘮濡傚湪娴锋按涓紝娴峰钩闈笂鍚屾椂鎵斾笅涓澶т竴灏忎袱涓搧鐞冿紝鎺夊埌娴峰簳鎵缁忓巻鐨勬椂闂存槸鍚︿竴鏍峰憿锛熷湪鍥炵瓟浣犺繖閬撻棶棰樺墠锛屾垜涓鐩磋涓烘槸涓鏍风殑锛屼絾鐜板湪鏈夌偣鎬鐤戜簡锛岀瓑鏈夋椂闂村啀绠楃畻锛岀粰浣犲洖绛旇繖涔堝锛岃垂浜嗗お闀挎椂闂翠簡銆
绛旓細杩欎釜鏁呬簨璁茶堪浜嗕冀鍒╃暐瀵逛簹閲屽＋澶氬痉璇寸殑鈥滈搧鐞冪殑杞婚噸涓嶅悓,钀戒笅鐨勯熷害涔熶笉鍚屸濊繖鍙ヨ瘽浜х敓浜嗘鐤,閫氳繃鍒嗘瀽鍜岃瘯楠,鍏紑鍦ㄦ瘮钀ㄦ枩濉斾笂鐢涓澶т竴灏忎袱涓搧鐞杩涜鍏紑璇曢獙,寰楀嚭浜嗕袱涓搧鐞冨悓鏃剁潃鍦扮殑缁撹,鍙栧緱浜嗙瀛︾爺绌舵柊鎴愬氨鐨勬晠浜,
绛旓細璇存槑鐨勬槸鑷敱钀戒綋杩愬姩锛岃繖绉嶈繍鍔ㄦ槸鎸囧彧鍙楅噸鍔涗綔鐢ㄧ殑绔栫洿杩愬姩锛屽洜涓烘槸閾佺悆锛绌烘皵闃诲姏鐩稿浜庨噸鍔涜岃█寰灏忥紝灏忓埌鍙互蹇界暐锛屽皬鍒颁骇鐢熺殑褰卞搷鍑犱箮娴嬩笉鍑烘潵锛屾墍浠ュ彲浠モ滅湅鈥濇垚鑷敱钀戒綋杩愬姩锛岃岀焊鐨勮瘽锛岀┖姘旈樆鍔涘拰閲嶅姏鐩告瘮灏变笉鑳藉拷鐣ヤ簡锛岄樆鍔涚殑鏁堟灉浼氭瘮杈冩槑鏄撅紱浣嗗湪鐪熺┖鏉′欢涓嬶紝缁撴灉閮芥槸涓鏍风殑锛涓や釜涓滆タ鍚屾椂钀藉湴...
绛旓細鏄袱涓搧鐞冨悓鏃剁潃鍦板惂銆傚拷鐣ョ┖姘旈樆鍔涳紝閾佺悆鍙楀埌鐨勯噸鍔涘閾佺悆1 2 浜х敓鐨勫姞閫熷害涓鏍凤紝浠庡悓涓楂樺害涓嬭惤锛岀潃鍦扮殑鏃堕棿褰撶劧鐩稿悓銆俆=H/V,T鏃堕棿,H楂樺害,V骞冲潎閫熷害.H鐩稿悓,V鍙栧喅浜庡姞閫熷害,鍦扮悆瀵逛换浣曠墿浣撶殑鍔犻熷害閮芥槸涓鏍风殑!,鎵浠1=T2 涓句緥璇,濡傛灉鏄紑濮嬫槸闈欐鐨,H=at^2/2 浠庡悓涓楂樺害鎶涘嚭鐨勪袱涓搧鐞,...
绛旓細鍦ㄧ悊鎯崇姸鎬佷笅锛堝嵆鐪熺┖鐜涓嶅彈绌烘皵闃诲姏锛夊簲鍚屾椂钀藉湴銆傚洜涓烘牴鎹墰椤跨浜瀹氬緥F锛堝悎锛=mg,浠讳綍鐗╀綋鍦ㄥ湴鐞冭〃闈㈢殑鍚屼竴浣嶇疆鎵鐢遍噸鍔涗骇鐢熺殑鍔犻熷害鐨勫奸兘鏄浉鍚岀殑銆傚湪鐜板疄鐢熸椿涓紝鎴戜滑鍙互鐪嬪埌锛岃川閲忓ぇ鐨勯搧鐞冨厛钀藉湴銆傚洜涓鸿川閲忚緝灏忕殑閾佺悆鍙楃┖姘旀诞鍔涜緝鏄庢樉銆
绛旓細濡傛灉鏄粠鍚屼竴楂樺害鍚屾椂钀戒笅鐨勮瘽锛屾槸鍚屾椂鐫鍦.鍥炵瓟瀹屾瘯~鏈夌枒闂杩介棶锛屾垜涓瀹氬敖蹇洖澶嶄綘~鏃犵枒闂鐐瑰嚮銆愰噰绾炽戯紝鍚屾椂棰勭瀛︿範杩涙~\(^o^)/~鎴戜笉鏄闇革紝鍙垜璧岀~\(^o^)/~~\(^o^)/~~\(^o^)/~~\(^o^)/~
绛旓細鎶婂湴鐞冩兂鍚戞垚涓涓閾侊紝鎶婅川閲忎笉鍚岀殑鐗╀綋鎯虫垚涓澶т竴灏閾佸潡锛屾嬁纾侀搧鍘诲惛涓や釜閾佸潡锛岃偗瀹氬悓鏃跺惛鍒般
