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6'2mv2T-mg2ὶ© T=5mg2sT52ᦑ⌱Ao9.ᨵ“ஹbஹcஹ”Í⚩ᙢᳫÏÐaÑÒjÓᙠᙢᳫÔ⍝.Öᙢᳫ⊤☢Ø?6|ÙᙢÏÐc|ᙢᳫ«ÚÏÐd|ĺÛÜÏÐᙢᳫÝᕜÞ24h,ᡠᨵÏÐᙳàXᒴᙊᕜH?ᔜÏÐᑡTäᡠᑣᨵA.“Ḅᔣ³:noᙢᳫ⊤☢gP:ᐔB.cᙠ4hᑁ3Ḅᙊ³M|3C.dḄᔣ³:ᜧoᙢᳫ⊤☢gP:D.qஹbஹcஹ4Í⚩ÏÐWbᙠ¤«ᑁ3Ḅå(ᨬ(ூ^ᫀBDூ᪆ூbA.aÖÔ⍝Ø?ᔣ³P|ᵫᨵæPçèᓽêma,Ḅᔣ³:noᙢᳫ⊤☢gP:g,ᦑA⚗⚪ì¤íî171B.c«ÚÏÐᕜÞ24h,ᙠ4hᑁ3ᙌᓽᦑB⚗⚪ì¤íî63C.᪷d—MtnGð-=madḄᔣ³:Roᙢᳫ⊤☢gP:g,ᦑC⚗⚪ì¤íîD.᪷dv=6Ḅ:ᜧocஹdḄ:aஹcḄM:¤n᪷dv=rcḄ:ᜧ
7oaḄ:6Ḅ:ᨬᜧᙠ¤«ᑁ3Ḅå(ᨬ(ᦑD⚗⚪ì¤íî10.ᎷóôᕒöᙶóøùᑮûüÐ⊤☢ýþὃ ᙠ⊤☢ᜐvᳫᳫḄ!"#X%&'#R,()ᕜ+#7,,-./#Gᑣ1ᑡ3456Ḅ7A.'⊤☢Ḅ9-:#;/#-----Gx2C.A'Bᙠ⚩DEFᐸH⊤☢#J''*'—RV27C2X2D.'ḄIJK#LMXூOᫀABCூR᪆ூTRA.᪷VWXḄYZ[&-=]g/x=vtR2hv2⌱⚗A56]B.᪷VḄ>/M-_2hv2R2GGx2⌱⚗B56]C.᪷V-Mm42G---------=`aR+(R+h)2
8GM=gR2⌱⚗C56]D.᪷V2ms=m—RḄIJKv=JgR=-41hRx⌱⚗D┯dᦑ⌱ABC11.fgḄ>/#WhᙠiḄjkLl☟nop:qrstḄHus,v[wᑮᨬᜧ{Vm|ᙠ:}~X`Ḅ᳛ឤ#P,fgᡠ-ឤ#-#V(V9ᦑB56]C.fgḄ#u᪷V£¤I10W,£=mg=lxlOxlJ=l()JᦑD56ᦑ⌱BD<ஹ¾¿⚪(Áᜧ⚪ᐳ2⚪ó2ᑖᐳ16.0ᑖ)13.ᵨÅ8ᡠÆÇÈ/ÉÊḄÉឋÌ.«ÉÊÎÈᙠ´ÏÐÑLÒÓÔÕÓᙠ]ᙠOÕÖḄ3ஹC!ÈᔜØÇᐝᵯÛ²ᘤ(ÅÝÞ)¡ßᐝᵯÛ¢à.ᐜᵨâã8ஹCßHus,äᵨåᨵçᐝᱏḄéᙽëìÉÊᑮ©!È4,☟níβᘤîÆçᐝᱏl8ᑮCᡠᵨḄt,ᵨâã/AஹïḄHux.ᧅ■ᵫnNéᙽçᱏóI'VJ/§?^TWWVWWஹ5~~τ~4OB/C´ÏÐÑ(1)²ôéᙽuoÉÊᜧḄ⊤wõ7.(2)#ÉÊḄÉឋÌö◤⌕/________.A.ÉÊúûB.ᙢ9-:C.éᙽ(ýçᐝᱏ)Ḅ>/(3)ᜧ4ஹïḄHux,²ᘤîÆf«.A.ᜧB.C.ூOᫀজ.v=-;ঝ.Cঞ.Btூ᪆ூ⚪ᑖ᪆(1)ᙽḄᒴ!"ᦑ$ᵨBC&Ḅ'ᙳ!)⊤+,Ḅ!)ᑣᨵu=/t(2)0ᙠ2ᱥ4567ᵨḄ89:Ḅឋ<=>?ᱥ4@AḄ="ᦑBCᱥ4Ḅ="᪷E=⊤FGE*=H5/J"BKLᙽḄMLᡠ$⌱C.(3)@ᜧAOQḄR,"ឋ<=@ᜧ"STᙽUVḄ!)W@ᜧ"ᦑX8Yᐝᵯ\Ḅ,QW
11]^"ᡠ$⌱B.ὃ`ឋ<=ஹᒴ!bGஹ=cᳮ.14.ᵨfᡠ+Ḅghijhklm=nឤcpghᡠᵨḄᵯrstᵯr"uVᵯv6VḄwxuVyzxuVY{"ᡭ`},ᘤᕜ0.02sML0.300kgḄ┴ᜐᵫ☟"┴/ḼḄᡭVHᑡḄ`"/Ḅ`KL"ᓽhklm=nឤcpg9.8m/s2 点时带受1 ☢ᑡghḄ7¡:A.ᢥ᯿f+Ḅij¥iᘤ¦B.Wᡭ`},ᘤ§ᑮᵯrḄ“zxuV”/C.«¬ᢞḄᜳ°"±,§XᵯrᐵᡭVHᩩD.KL/´µ`QḄRE.᪷EKLḄ¶·}¸┴89:]¹Ḅº<=»ᔲ>?@AḄ=Wᐸ:7¾¿Ḅ¡BḄÀÁÂᙠ☢ḄÃᑁ"ÅᦋÇজঝ2 gh:Éᑮfᡠ+Ḅ"᪷EÉ┴8`ᑮ`º<=Ḅ]¹L>?J,=Ḅ@AL>?J¶·ÊᶇÌÍᨵᦔᦪÀÐ*fffᓫ5-4.05->-V-4.42------7«05J8A3 ᙠhklm=nឤcpḄgh:ÑÒ"┴]^Ḅº<=Ó»ᜧ?┴@AḄ="ᐸÔ0Õ⌕»ூ×ᫀজ.BᦋwxuVঝ.Cᦋᐜ§XᵯrÚ«¬ঞ.0.2710.270ঠ.gh89:Üᙠ᥅Þூ᪆ூ1 ßᓅ2┯âḄ»জBᦋwxuVঝCᦋᐜXᵯÚ«¬;
12(2)[3]º<=]^LéEp=?gXBD=0.300x9.8x(0.0442+0.0480)J=0.271J[4]D`!)>?CEQḄ'ᙳ!)XCF(4.80+5.18)x10-2v„==-----------------------m/s=2.50m/s2T0.04±ᳮ"B`!)%(4.03+4.42)xlO-2._.v==----------------------m/s=2.1Im/sRB2T0.04=@AL1197\E=-mv10.270Jk(3)[5]┴]^Ḅº<=Ó»ᜧ?┴@AḄ="ᐸÔ0Õ⌕»ÜᙠÃûüºy᥅ÞüºÌஹ}¸⚪(ýᜧ⚪ᐳ4^⚪"ᐳ36ᑖ)15.´ᐶ ᑮឋḄ⊤ὡ=2,4Ḅᦪx!(ᡈ$%)Ḅ!'(ᔠឋ⊤*+,ᑡ.⚪1ᙠᙢ☢5Ḅᱥ758ᙠᦪk=200N/mḄ5Ḅ>?8@ᙠABCDḄEF5HᡠJKLEFḄ>?8MN,L0.1mᱥ7QRSQᙢ☢TULEVᱥ7W᠒ᓣZᑮSᙢ/?=0.5mZᜐ^_*`aCDbEḄ᥅d(gg10m/s2),,ijপឋḄᜧm(2)ᱥ7`nopm(3)LnᡠrḄs///////////ஹ'F/////////////ூuᫀপὡ=U;(2)101m(3)11Jூ{᪆ூ}{(1)ឋḄᜧ
131,1,E=-kx2=-x200x0.12=1J,22(2)~SQᙢ☢G=F=kxᱥ7Ḅ`nG=fcc=200x0.1=20Nᑣᱥ7W᠒5ᓣ/i=0.5mᱥ7`nopE=Gh=10J(3)LnrsᓄḄឋaᱥ7Ḅ`nW=(10+1)J=11J16.ᡃ2022ᝍCᐸᨬᐹឋḄ⚗?.H1-ᡠJp"=60kgḄᕒ!C⍝ḄAᜐᵫ☟¤QR¥¦§a=3.6m"ᒴ¦§C,ᑮC⍝©8B§V8=24m/s,AªBḄ«Z¬=48m.®ᦋ°ᕒḄ±ᔣᙠC⍝ª³´ᵨ?¶·¸C⍝⊖ºᐸᨬ»¼Cᜐ▬¾?¶¥ᙊÀḄᙊÁ.C⍝©8BªC⍝ᨬ»¼CḄZ¬Â=5m,ᕒᙠBஹC´ÃnrsW=-1530J,gglOm/sZ(1)iᕒᙠA8¶,CÄᑮÃn6Ḅᜧm(2)ÅᕒÆÇÄḄᨬᜧÈnᐸᡠÄ`nḄ6ÉᑣC¼ᡠᙠᙊÁḄÊËRÌÍÎÏᜧÐூuᫀ(1)144Nm(2)12.5mூ{᪆ூᑖ᪆ூ}{(1)ᕒᙠA85rÒ§ÓḄᒴ¦§ÔABḄ!x,Õ☢ḄÖ×a,ᑣᨵv2=laxB
14᪷ÚÛÜÝÞBßmgsina-F=mafà.Hsma=—xᵫ¥5áὶã{F=144N((2)ÔᕒᑮC¼Ḅ§vc,ᙠᵫ8ᑮCḄäᵫBᳮᨵmgh+W=gmvc-gÔᕒᙠC¼ᡠÄḄæᢝnèN,ᵫÛÜÝÞBß2éVCKᵫᕒÇÄḄᨬᜧÈnᐸᡠÄ`nḄ6Éᓽᨵ%=6ëὶã{/?=12.5m17.HᡠJìBÕ☢ḄÖ×Þ30ᱥ7AªÕ☢´Ḅ᥅díᦪÞîï,8ìBᙠÕ2☢ð8ᜐñ!58òC¼ᵨ-᪷_ô!ḄïEïᐝCḄBCDöºᱥ7AaB,CD÷øEFªÕ☢ùúAḄp2m,BḄp¦ÒRᱥ7AᑮC¼ḄûSL,üýAஹB?Ò§ᜐ(ᓽÿ )A☢ᔣ3ᔣᱥAᑮᨬាᑮC!"#$%&g,'()*+"-./0123ᜐ5678::(1)ᱥAᔣ<ᑮC=Ḅ$%ᜧ@;(2)ḄᨬᜧB;(3)ḄᨬᜧឋD
15ABj^2£33ூGᫀ(l)y=J*—gLK(2)x--—K(3)=~mvo-"7g/44ூL᪆ூᑖ᪆ூNL(1)AO☢PḄQ᥅S"ᜧ@&f-2mgcos9ᱥAᔣᑮCḄ./0᪷UVᐵXᨵ1122mgLsin^+~x3mv2=—x3mv+mgL+fL0ZᐭL\v=&_gL(2)]ᱥA^_ᑮᨬា`ᑮCaXbcᵨeᳮ-f-2x=0-gx3mv2L\_L_vjLx-------------------------4g22g2(3)]ᨬᑮាᑮCḄ./0aXb᪷UBᐵXᨵEp+mgx=2mgxsin3+fxh&mgx=2mgxsin0ᡠjFA3273234=k=m#n---=--mgL318.qᡠrABC&stᙊv᪀ᡂḄyᙊz⍝ᐸ}eᙠ7☢ᑁz⍝&R(tᙊvḄ
16ᜧ\0A0C7ᨬ&8,ᨬ&C,tᙊvᑁᐝQᙠAᨵsB&Ḅ@ᳫ&ᵫ☟<ᐭtᙊvᑁtᙊvḄᑁ¡ᜧ5@ᳫḄ7'()*+"1£@ᳫ¤.C=ា¥v¦ᨵ§¨©ᵨ:@ᳫ¤.C=Ḅ$%ᜧ@K2£@ᳫ<ᑮ«z⍝ḄᨬC,:@ᳫ¤.ᨬB=Ḅ$%ᜧ@Oz⍝a@ᳫḄ©ᵨ"ᜧ@K3£@ᳫ]C®¯ា`ᑮA:@ᳫ<=°±AḄ%ூGᫀপᓃ=ᡃµফj=2ᵐK¸=5ᔞKব=1.25RூL᪆2ூNL1@ᳫ¾.C=¥v¿§¨©ᵨ"ᵫ#g=§Á\ᓃ=Â2£@ᳫាᑮ«ᨬC,ᑣ¾.C=$%&Äa@ᳫᵫ8ᑮC./ᵨeᳮᨵmg2R=gmL\j=2ộᳫ¤.B=ᨵ2y%F-mg=m-^NK\
17FN=5mg3@ᳫ]C®¯ÇÈᑣᨵR=g/R—vftc\vc=]ᑮ¤.ᵫÉÊឤ\1mg(h-R)=—mvf9c\h=\.25R
18