2023届高三物理复习重难点突破48用单摆测量重力加速度（解析版）

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17A.ùᓫ᤮Ḅúᨵᕜ°2sB.ùᓫ᤮Ḅ᤮ý°2mC.îùᓫ᤮ᙢᳫÿᑮᨴᳫᐳᨬᜧᡠḄᙶ᪗ᜧD.᤮ᜧᐳᨬᜧᡠḄᙶ᪗ᜧூᫀ௃AAB##BA18.54?(.)*ABFAXi-Xiூ,᪆௃(1)[UA.4283456789:5;<᤮ᳫᙠ>?@AB789CឤᦑAFGHB.IᳫᙠAJḄKLMNᔣPQMNᓽSTUVᔣḄᔠQMN᤮ᳫḄᔠQ5XYQSᙊ[ᑗVᔣḄᑖQᵫXᙠ/JTU`abcVᔣḄᜳefXᙠ8J`abcVᔣḄᜳeghᙠ/JYQSᙊ[ᑗVᔣḄᑖQfXᙠ6JYQSᙊ[ᑗVᔣḄᑖQᦑ᤮ᳫᙠAJḄᡠjᔠQᜧffXᙠ8JḄᔠQᦑB┯lHC.᤮ᳫn@0JpqrsKLᜧftuvwuᓄ᪷zᓽ=ᔢurgh᤮ᳫn@஻Jpqrs~KLᜧfuᓄḄᦑc┯lHD.᤮ᳫzfJᑮ஺J஺Jᑮ6JḄ@ABYQ:᤮ᳫ஺Jᑮ8J>?@AB᤮usufYQ᳛uᜧᦑD┯l஺ᦑ⌱A.(2)[2]A.᤮⌕⌱ḄஹឋfḄg9ᦑAFGHB.᤮ᳫ⌱ᜧஹfḄf?@ABḄ¡Q¢£ᦑBFGHC.ᓫ᤮᤮?᤮et¥@5஺ᦑC┯lHD.ᵨ§L¨©᤮ḄL/,~fᳫḄvw«ᓫ᤮Ḅ᤮ᦑD┯lHE.®᤮ᳫ᤮ᳫn@¯⊝34±²³´µ᤮ᳫ50¶ᐰ?ᡠᵨḄs3ᑣᓫ᤮ᕜ»7ᦑE┯l஺ᦑ⌱ABo[3]᤮ᳫcwMrf=18mm+5X0.lmm=18.5mm[4]ᵫᕜ»ÃÄT=gÆL=È47rzᑣÉÊ

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202ᙠ᤮ᳫcᯠìᚖḄî᝱ðᵨñòóGô>õöì÷ᑮ᤮ᳫᨬ⚔úḄxG/§ᵨû᪗ᓱô=>᤮ᳫḄËþ'ᦪ᝞ᑣÿ/=mm஺B2ÂÂ⊈IIIWR0503ᨵᵫᓫ᤮ᕜgᑣ!"஺A.%&'()*+,᤮)-ᨵ.᤮ᳫḄ12B.4JV7ᐰ9:;<,N+17ᐰ9:C.᤮(.BCDEᱞ᤮:GHIJKL:M᤮(N)ூPᫀ௃D18.8AC##CAூV᪆௃1[1]᤮(⌱[)\1mḄ]^᤮ᳫ⌱[_`a&ᜧḄᳫ஺ᦑ⌱1஺2[2]10ᑖ*g᪗ᓱjḄkl,0.1mm,᤮ᳫḄ2,d=18mm+8x0.1mm=18.8mm஺3[3]᪷p7=2ᐔsV஺=tA.%&'()*+,᤮)-ᨵ.᤮ᳫḄ12M᤮)%&ᑣgAulvB.p7w7ᐰ9:;<,N+17ᐰ9:ᑣ%ḄᕜNᑣgᜧB┯;vC.᤮(.BCDEᱞ᤮:GHIJKL:M᤮(N)ᓽ᤮)%&ᑣgCul஺ᦑ⌱ACo16.ᙠ“ᵨᓫ᤮%E*”Iᙳᒴᳫᙠᚖ☢Ḅ☢ᑁ*Ḅ᤮:'ᑮᳫ⚔Ḅ]()ᳫ2,d,ᐝᘤᘤᑖ᤮ᳫḄ⊝¢£¤ᐝᘤ¥¦ᔣ¨©ᐝª஺ᙠ᤮ᳫ᤮:GHI«᤮ᳫ¬Gᐝᘤᘤ®¯ᘤᦈ±ᑮᐝ²³஺ᐸ²µ¶ᐭ<¸¹¬ᜐᳮ¼½J¾¿À(஺Àᵬ,ÂÃÄÅÀÀÆ,ᡠᦈḄᐝ²³/ȯ®eNᓄḄÀ(Ëᙶ᪗⊤į®Îᙶ᪗⊤ÄᦈᑮḄᐝ²³Ï*ᑣÐ

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23

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