2A.Í«¬«+ÎÏnÂÃ=ÌḄЩoL+,"gLsinB.Í«¬«+ÎÏnÂÃ=ÌḄÐÑRC.Í«¬«+ÎÏnÂÃ=ḄÐ᳛ᐜÔᜧÕÖ.D.Í«¬«+ÎÏnÂÃ=ḄÐ᳛µ×ØÙ⚗⌱Ü⚪Þß⚪ᐳ4.⚪á.⚪5ᑖᐳ20ᑖᙠá.⚪â+Ḅ-⌱⚗nᨵÙ-⌱⚗Fãᔠ⚪å⌕çḄᐰé⌱¢Ḅê5ᑖ⌱¢ëµᐰḄê3ᑖᨵ⌱┯Ḅêᑖ7ஹ,M?”Ḅᱥî☟Éᙠ()ᙢ☢kᙠ()ï=ÑḄÄᵨ@ÊËᙠ0 6sᑁᐸ'ñ§ᐵóôõï=ḄÐ᳛ñ§ᐵóôᡠög=10m/s2,@ᑡᑨøDEḄFA.0 6sᑁᱥîùú᥅¸=ÌÐ24JB.ᱥîḄM?”2kgC.0~6sᑁᔠ=¢ᱥîÌḄüÐ120.1D.0 6sᑁï=ÌḄÐ156J8ஹ@☢DEḄFA.ý?,F0ᑁþÙḄᱥîÿ⌴ᑮᑁḄᱥB.ᙠᩩḄᑁC. Ḅ ⌕"#$Ḅ% &D.'ᐹᨵ*+ឋ-./'ᑖ1ᐹᨵ2Ḅ3⊝56E.78ᑖ19:;//•<.@ᑖ1A/BCD7ᑖ19:;E$ro@ᑖ19⊤G/HA9ஹKᵬᡠNᙠOP/ḄᐝRS☢UᑖVḼᚖY$S☢Ḅᒴ[\]^ᚖY$S☢ᔣU/\ `[&abᔣᐸ\ `[&8d@9feᓄḄghKiᡠNkl/Eᵯo/RḄpqrs᪾uf=0@vᵫ☟yz{ᡭ@vḄ}&/v,~+Ḅ:;/LA}&/g,᪾☢/S,=%ஹf2=2toஹᡭ=3Ḅᙠrs᪾RḄᑡaḄ-BC
3A.f1~f3ÃÏᑁäó᪾ḄᵯᐜÌ⌮Ã┐÷Ã┐B.0~øÃÏᑁäó᪾ùᒴs¼ÍqÎ^C.0“3ÃÏᑁäó᪾ùs¼½⌲ÔÅxḄÍqÎ^2D2CD.0~f3ÃÏᑁäó᪾ûüḄᯖὡÿ 3-10ஹ(a),☟ᙠᙢ☢ḄᱥᑮFḄᵨFtḄᓄᐵ (b)ᡠ."ᱥᙽᙢ☢Ḅᨬᜧ☟᥅'Fm,Ḅᜧ()*᥅'ᜧ(+,ᑣh t3ᑁ()(b)A.t21ᱥḄ234ᨬᜧB.t21᥅'Ḅ5᳛ᨬᜧC.t31ᱥḄ*7ᨬᜧD.t31ᱥ89:ᔣ<*=ஹ>?⚪AB⚪ᐳ2(⚪ᐳ18ᑖFGᫀᑏᙠG⚪ᓱKᢣMḄG⚪ᜐO⌕QᑏRSTUV11.(6ᑖ)ᙠW᪥YZ[*K\>?(]ᐜ_`abV 300HAḄcd⊤ᜮGᦋh bV 0.3AḄᵯj⊤ᯠlᵨᦋhḄᵯj⊤mbnoᵯpḄpqrs⌱uḄ>?ᘤᩞᨵAcd⊤ᜮG(bV300|1A,ᑁpy z{|}))*pᘤzfi(O-iOkn))*pᘤᵨ(0 50g)ᵯp~R(0~9999O)ᵯEi(ᵯ*y 1.5V)ᵯ6(ᵯ*y 9V)8ᐵஹপ>?(]ᐜᵨ(a)ᡠᵯmb⊤ᜮGḄᑁp>?AA.ᢥ(a)ᵯ_)*pᘤḄ)ᱏKᨬ
4B.8S2,ᔠS”⁚)*pᘤḄ)ᱏG;C.ᔠS2,ᢝ)*pᘤḄ)ᱏO⁚ᵯp~Ḅpq⊤ᜮGḄᦪ 200M£¤¥ᵯp~ḄpqRo,(b)জ>?Kᵯ§⌱ᵨ)*pᘤ§⌱ᵨ¨⌱©ªᘤ«¬®¯ঝm±⊤ᜮGḄᑁpR²,⊤ᜮᑁpḄmbq´ᐸ¶>q_¨⌱©“ᜧ”ᡈ“(”¯ফ>?m±GḄᑁp4=500Q,⌕_⊤ᜮGᦋhᡂbV 0.3AḄᵯj⊤§⌱ᵨpq QḄᵯp⊤ᜮGὶ; 3>?(]ᑭᵨᦋhlḄᵯj⊤A,ᵨ bᡠᵯmbnoᵯp¿ḄpqmbᵯÀ⊤VḄᦪ L20V,⊤ᜮGḄᢣ┐ᢣᙠÂᵯj14Ḅ250ᜐᑣRx=Q.12. 12ᑖ¯(ÃÄ⌕Åᶍ?ÇÈÉ7ÊឤMÌF(ÍᳫÏÐÑᜋ\ᵫ☟ÔÕᵨᦪṹ+ÈḄ⚣Ø᯿+57Ú᯿ᱏᡠÜo"Ḅ⚣Ø⚣᳛ ÝᙢÞ234 g 1⌕?Ç(ÍᳫßàUVKÈÉ7Êឤ(Ã◤⌕mbâßãäᱥᳮb______¨©⌱⚗çḄ«¬¯A.ᜋẈḄé4dB.(ᳫḄÑêOC.(ᳫḄëb 2᯿ᱏK4______¨“”ᡈ“O”¯ÔÕ(ᳫḄ 3í⊤îï¨ᵨ⚪"ᩩñKòRḄᱥᳮb⊤¯ᙠóôᐕöḄøᑁᡂùr?Ç(ÍᳫßàUVKÈÉ7ÊឤúஹûT⚪AB⚪ᐳ2(⚪ᐳ26ᑖFGᫀᑏᙠG⚪ᓱKᢣMḄG⚪ᜐ⌕QᑏRü⌕Ḅᦻ«þÃஹVïÿ 13. 10ᑖA☢500cm2,AஹBᨵᙳ104cm3ஹᙳl spaஹᙳ27CḄᳮ ᵨ !" ᨵ#$%&'M, ()*+,-☢Ḅ&'N./#01 2ᐸ4᠒ᔣ789 :;,B/% 2<=>AḄ?ᢝ)A &'M?ᢝᙠCDE)9)*&'Fᘤ
5I Ḅ᥅K ᕜMᜧ10'Pa,O01P=1X1(PN; Qজ&'Nᔣ789ḄSTUVWXঝBḄᓣᑮVW14.(16ᑖ)\]^*Ḅᵯ`ᏉbᘤḄcᓄEfᡠh ᪷jklmnopS/=0.50m,qr =53 nostu"#R=0.05QḄᵯv.ᙠno xd=0.56mḄyzᑁ |ᙠ}ᔣᚖnoj☢ᔣḄᒴ` `B=2.0T.=4.0kgḄlmCDjEnos ᵨ$=FᩚGHp!.CDḄDEF`yzḄpSs=0.24m.#DᏉbὅᵨឤ1P=80N9G"ᩚ ᵫ☟9 sᓣ=>?ᢝFnoᚖ.OCOᑮ`s;Ꮙbὅ¡¢ £¤ឮ¦E2O§ᑮDE(©1/ªg=10m/s2,sin530=0.8,)*ᐸ«ᵯvஹ᥅K1¬ᩚ®Ḅ).Q¯(DCD°ᐭ`;ªvḄᜧ\XফCD°ᐭ`;ᡠ²Ḅ³´1FAḄᜧ\X(3)ᙠᓣCDḄ=> ᏉbὅᡠµḄ¶W®ᵯv·¸Ḅᯖὡ%Q.15.(12ᑖ)fᡠh jklm»ḄA»sᨵ▢¤¾ᘤ ¤¾¿ḄᵯÀÁᔣ6» ᮣÃᵯÄ*ᢣ┐ÇÈÉÊE=3V,9AvᘤᐰvÌR=99C,4»¤¾¿ḄᵯÀᨬᜧ9ÎE=2.4eVÏᔠᐵS,Ò-ᔣ789£ᱏ ÔQ9AvᘤḄᜐ;ᵯÄ*ᢣ┐ា×ØÇÈ Q¯(1)jklm» ᵯXফᵯÚḄᑁᵯv
6ÛὃÝᫀ#ஹᓫ⚗⌱â⚪¯ä⚪ᐳ6\⚪ æ\⚪4ᑖ ᐳ24ᑖᙠæ\⚪,¿Ḅç⌱⚗ èᨵ#⚗Uéᔠ⚪ê⌕QḄ1ஹDூ᪆A.᪷ìfíîÊᕜïT=0.02s,ᑣrª(0=—=-^ߟrad/s=1OO^rad/sT0.02ᦑA┯óXB.CôᙌᵯḄᨵᦔÌ=44W÷=440÷V2᪷ìᳮAᘤḄᵯùúQûüôᙌḄᵯ ᓽþÄᵯ⊤ḄᦪU,=0|x440V=32V55ᐹᨵᓫᔣᵯឋ᪷ᨵᦔ Ḅ (32V)2T%&2%!"#ᵯ$t/=16^VLᦑB┯'D()*C.+,-./ᘤḄ1ᜮPᔣ3,-456ᙌ8ᐭḄ:ᵯ/;56ᙌ"#ᵯ$<.ᡠ>ᵯ?⊤A2ᦪAᜧ,᪷ᓫᳮE.$ᘤḄᵯ?FGlk=!h.HIᵯ?⊤A1ḄᦪJAᜧᦑC┯'ᦑ⌱D
72ஹBூ᪆A.ᵫKS᳛⊤N}&ᑣ@v8ᱥḄ}&bᔣ%⌱⚗A┯DB.v-fK}&ᙠ@9Ḅ⊤N}&bᔣ%ᑣE@v8ᱥḄ}&bᔣ%⌱⚗Ba;C.ᵫS᳛⊤NᱥḄ}&ᵬᱥḄᑗS᳛ᩭᜧᓽ}&⌲¤ᜧ⌱⚗C┯DD.v”Kᡠ¥☢⊤N5~%⍗⊤N5~%§ᵫK¨2@v8ᱥ©%⍗⌱⚗D┯ᦑ⌱B3ஹCூ᪆KᡠNᨬᜧ¬Pᧅ,@¯°ὅr²Ḅ³`r²Ḅ´⍝%ᑗᵫ¶·ᐵ¹¨sin0--mºᨵ»A¼½ᔣ¾AᨵᦑCaABD┯4ஹCூ᪆A.ᵫEᳫ3ÀÁ⚪Ãᨵ,12Jg2=
8ᑣ2/agᨴ5ᦑA┯'*B.ᵫGm.3g“3ᑣ2O=PQᦑB┯'*C.RSTUVWᦑC()*D.᪷Xᨴ=0gZR3ᑣᨴᳫ\ᙳ^W3ᑣP-2ᐔGR(E—h1)ᦑD┯'ᦑ⌱C5ஹCூ᪆᪷cdeR GHIfgᙢiᑮkᙢilmnVo-Qkᙢiᑮgᙢilm;Vo-ᡠ>kᙢiḄVWᜧpgᙢiḄᓽW>ᓃV᪷=—HIkᙢiᑮᙢuḄvwpgᙢiᑮᙢuḄvwᓽrr\9জi>a)2ᦑ⌱C.6ஹAூ᪆AB,xyz{|ᑖ᪆᪷~R GF”,-mgsin0=ma|mW=FL=maL+mgLsin6A()B┯'*CD.yzmᒴnV6o-VWSAᜧ᪷P=^vHI|Ḅ᳛SAᜧCD┯'ᦑ⌱Aஹ⚗⌱⚪⚪ᐳ4⚪⚪5ᑖᐳ20ᑖᙠ⚪Ḅ⌱⚗ᨵ⌱⚗ᔠ⚪⌕Ḅᐰ⌱xḄ!5ᑖ⌱x<ᐰḄ!3ᑖᨵ⌱┯Ḅ!0ᑖ7ஹBDூ᪆2~6sᑁᱥmᒴV6o-|¡᥅£|ᜧ¤0~2sᑁᱥmᒴnV6o-᪷7¦§Ḅ¨᳛nVW©᪷~R GᱥḄª«᪷-¬ ᳮᔠ|xᱥmḄ:᪷¦§Ḅ“☢°”ᱥḄ²³fQ᥅£|mᓽH|mḄூA.ᙠ2~6sᑁᱥmᒴV6o-ᵫP=Fv,!P24F=-=—N=4Nv6ᦑᱥ{ᑮḄ᥅£|ᜧ/=F=4N᪷v-t¦§Ḅ“☢°”⊤ᱥḄ²³I0~6sᑁᱥḄ²³x=4+6x6=30m2ᱥ´µ᥅£|m
10%=.=4X30J=120JᦑA┯'B.0 2sᑁᱥḄnVWAv6.a=—=—m/s=3m/s2t2ᵫ~R GH!F'-f-maᙠ2s¶P=F'v,ᵫ¦IP'=60W,v=6m/sὶ¸!¹'=10N,m=2kgᦑB()C.0~6sᑁᔠ|xᱥmḄ:1,1,W=-/nv2-0=-x2x62J=36JÎ(i22ᦑC┯'D.ᵫ-¬ ᳮHI1,W-W=-mv2-0v(+ᔩ=(gx2x62+120)J=156JᦑD()ᦑ⌱BDoூi¼⚪Ḅᐵ¾⌕᪷VW4¿¦§!ᑮᱥḄo-ÀÁᑖ᪆4⌕ᢕÃVW¦§Ḅ¨᳛⊤nVWஹ☢°⊤²³⌕I⍝-¬ ᳮÅᵨḄÇÈ8ஹBCEூ᪆A.É«¬fÊWËḄᱥÌ⌴ᑮÊWÎḄᱥÊWËḄᱥḄᑁ¬
11 ÚÛᦑcaDD.'ᐹᨵ*+ឋ-./'ᑖ1©ᐹᨵ2Ḅ3⊝56ᦑD┯DE.᪷Ýᑖ1AḄᱯß78ᑖ19:;/ro@ᑖ1A/0,7ᑖ19:;E$ro@ᑖ19⊤G/HAᦑEaDᦑ⌱BCE,9ஹBDூ᪆A.᪷Ý8—/K“ "@9ᑁ8—ḄS᳛©eᵫâã.AজABSE=n--=n---XXᑣrs᪾Ḅ `ᵯ+äᜧEbᔣ©eᑣᵯ*bᔣ©eᦑA┯DBC.0 å@9ᑁᙌ\çl©eᑣèᵯ*éêᨵ f3@9ᑁᵯ*©eᵫëìᑣrs᪾ᡠ íîAḄᔠA/ðᑣᙌᔣñᒴ}Yò+ᦑBaC┯DD.ᙌḄ `ᵯ+ä/8S_B.Sᵫ$0 fl@9ᑁᙌ\çl©eᑣèᵯ*éêóèᯖὡéêᑣ0 a@9ᑁrs᪾éêḄᯖὡ/ᦑDaᦑ⌱BD«10ஹACூ᪆7öAE$ᨬᜧ☟᥅øA@ᱥ☟y©+☟᥅øAöAùA3⊝7öAᜧ$ᨬᜧ☟᥅øA@ᱥúû},7öAüE$ᨬᜧ☟᥅øA@ᱥᵫ$ýឋþÿ .ூAஹᙠ0-tiᑁᨬᜧ☟᥅t2ᱥᑮḄᨬᜧ ᦑᱥḄ ᨬᜧᦑA! BCDஹᱥ"᥅ᜧ#$% ᨬᜧ᥅Ḅ&᳛ᨬᜧ (ᙠtiᑮt3ᔠᔣ+ᱥ,- +.t3"ᔠ/ᔣ⌕1 ᡠ3t3AḄ ᨬᜧ4ᨬᜧ.᥅Ḅ&᳛ᨬᜧ ᦑBD┯6C!ᦑ⌱ACூ
12᪷{|ÀÁᑖ᪆ᱥo-ÀÁL4äåᔠ|æᱥ☟è<-tIᑮt34äᔠ|ᔣåᱥnVåét3êëᔠ|ᔣëᱥ;Vo-.íஹîï⚪⚪ᐳ2⚪ᐳ18ᑖðñᫀᑏᙠñ⚪ᓱᢣ Ḅñ⚪ᜐ<⌕ᑏ÷øùú1411>ElRz-R)û0.54.32ூ᪆üᔠS2cᐵ4ýᵯþᵯ?<.î▭ ᔠᐵS2ᵯᵯᵯᵯᜧᵯᵯᜧஹᘤᜧᔠᐵS2⊤ ᵯ ᓄ !"#$ !"ᵯ%⌱'E2,ᘤ%⌱'&;2I*ভᔠᐵS2,#ᵯᵯ-.⊤ᵯ#/0ᵯḄ2ᑣ.ᵯ4Ḅᵯ#/0ᵯḄ533⊤6ᵯ47ὶ.7ὶᵯḄᵯ6ᡂ:;
13JK{◤⌕JKᜋẈḄ~.(2)[2].\ᱏ _zAB:BC:CD:DE^X:2:3:4,ᡠzA-bᳫḄ.(3)[3].ᵫᒴnAx=aT2ᕜ⚣᳛ᐵT=—fᐸAx=dghijឤᑣa=gᓽ/g=d-ஹ⚪S⚪ᐳ2⚪ᐳ26ᑖMᫀᑏᙠ⚪ᓱᢣ¦Ḅ⚪ᜐ⌕¨ᑏr⌕Ḅᦻª«¬ஹVt®¯°13ஹজ3.3cmঝ360Kூ᪆জ²³´TAµ¶Ḅ ·#PA'=Po+/=L2xlTU5pa3AlAµ¶ᵫPNA=PAKᑣ¸ᓃ'ᗔ=Y=21'%¹L.=—=20cmSA»
1450=KcmSA3ᦑ\]Nᔣ^_Ḅ`abC/=L-L=ycm=3.3cmAAঝdBefg\]Mhᢝᙠjkl#mopq%=3'=L2xl()5pa᪷tuᳮwxyPBzPB'T-T'BB{y%=£&2k=360KPB14ஹ(1)2.4m/s(2)48N(3)64.126.88.Jூ{᪆পᵫzwxz",gsin6=]2zs2mm.ᐭḄ v=N2as=2.4m/sফᵯE=Blvᵯ,BlvI=----RFQBIᐭyZ*48NবᏉὅ1&:
15W=F(s+d)=64Jᵫ¼½¦SF-mgsin6-¾=0ÀᙠÁÂÃÄᒴᙠÁÂÅSdt=—vᯖὡÈSQ=/2ᵨ=26.88J15ஹ(1)2.4V(2)11QூË᪆(1)ᵫ⚪Î_¸eU=EkmaxᑣᨵU==2.4VeফᘤÐᐭᵯḄᵯ#QR=—x99Q=88O'9ᵫᵯᱯ_`ᓽc/882.4=-----x399+r˸r=HQ
