功与能重点难点易错点高频考点高分必刷经典题

《功与能重点难点易错点高频考点高分必刷经典题》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

⚪☢ᵫAuvwSxBu.zᙽᙠ}ஹ~
9ᔣᜳ<ᑖaḄᦔ஺஺zᙽᵫAuOPᑮBu34".ḄzᙽᡠQḄ஺পᢥ᯿஺ᓽW=FScos0,ᐸ"SᢣᙢḄḄᦪ'
(᯿)Ḅ⌱+ᨵᐵ.F01ᐰ34Ḅឤ.67W9ᔣḄᜳ<஺=0஺46<90஺.cos6>0,W>0⊤I᜜KLᱥNOP.ᱥNQR.=90஺<64180஺.cos6<0,W<0V⊤I᜜WXᱥNOP.ᱥNQY.=6=90஺,[Q.ᑨ]9^ᨵজᵨḄᜳ

1ᑁ#$$☢&'ᑖ)hi*h2,᝞,5ᡠ-./$Ḅ0'᜛஺23456᫜Ḅ▀9ᡭ;ᨬ=6᫜$☢&'>?ᑣABCDEᡠḄ?n■4ஹᵨHIJᳮL
p⚪2rstfuvwḄxyz{4.᝞,3ᡠ-AB1/4ᙊNO⍝QR0.8m,BC$SO⍝TL=3m,ᱫHfu6᪷}~SឤᔠᡂឤBCᜐḄ᥅Wᦪ1/15,Yᨵ[\m=lkgḄᱥ^_A`a☟cdefᑮCxyAឤḄᑣxyBCᩖ஺?ᦔ6ឤḄᦪ*x`hijc஺Lᱥ^ᙠO⍝ABlᡠḄmᱥ^Ḅ஺yBC
஺7.᝞,7ᡠ-ᙠ30°Ḅ☢ᩩ~ḄJᙠ☢~¡B4ᙠfᙽḄJfu~£ᑮzᔣ¥¦§ᔣᜧ©ឤnBcF=100NḄwᱥᙽª☢ᔣf1m«fu¬Ḅ~®¯°☢S±,3ḄBCDwFḄ«±A.100JB.150JC.200JD.ᩩÀ¼Á{ÂJ5ஹᵨ²³I´ឤJµL
᝞¶ᱥ^·E*¸¹ᵨᡈ·ᨵEᡈ¸»¼²³I´ឤJµ஺᝞¶L¸A
Ḅ½ᵨ²³I´ឤJµᩭL¿஺p⚪3rstLÃḄSᙳ᳛*Æ᳛Ḅz{5.᝞,4ᡠ-[\m=2kgḄᱥ^aᐝf☢Ḅ⚔A`Éoo=5m/sḄÊË8.[\m=0.5kgḄᱥ^a&ᜐÉ$SḄÊË'%=5m/sÓÔᙠÕHt=2sᑁ'feᙠD`°¸Ì5ÍθÌÏÐᑮB`ḄË'Ñ./aAᑮBḄ¦§&'h=5m,L¸ÌḄ¸mᱥ^ᡠEmᱥ^Ḅ!A2sᑁEmᱥ^ḄSᙳ᳛!2sÖ,Ḅ஺Emᱥ^ḄÆ᳛!«gØ,56ஹᵨIÙᳮL
6.6Ú☢ÛSḄᙊÜÝᙠÞ$S☢᫜,6

29.dE²ḄáâEᱥᵫᙢ☢åᑮæDÃ&'ᐸË',è᝞,9ᡠ-ᑣá11.ìíH²îJ᳛60kW,ì[\5.0X103kg,ìᙠ$Sö☢÷âwḄ᳛éê
ᓄḄ,è½I,10DḄë!ᑮḄᜧ©EḄ0.1øùLrìúᢝîJ᳛a☟cÔí=IüᑮḄᨬᜧË'!PPht2hAt26CD,10p⚪4r.²dHḄp⚪⚪5ᒴḄᨬ!"⚪12.%&'(᳛*60kW,12*5.0X103kg,ᙠ789☢;<íH²Ḅ᳛rᓽᱫḄ᳛=ÿ஺!=ᑮḄᜧ?@AḄ0.1BCDEF☟HIJK0.5m/s2ḄᒴOᑣQRSTᢝV!"W(1)Ḅᨬᜧ஺“ḄᱫP=fv,„(2)ḄX(᳛(3)Ḅᒴ10.1253%&'(᳛60kW,᥅Z[ᦪ0]D(1)^S_ᑮḄᨬᜧ@V`(2)F☟HIJK0.5m/s2ᒴQRSTᢝV!"W(3)aḄ*0.2m/s!Ḅ@V`W(4)EK&'(᳛_ᑮᨬᜧᡠᵨ!"*10s,ᑣe!"ᑁḄgh@V`W⚪6.OḄᨬᜧ⚪஺13.ᵯjkRlmn12*8kgḄᱥqlḄrsStk120N,ᵯḄ(᳛sStk1200W,⌕weᱥqᵫ☟HᵨᨬyḄz{n|90m(~eᱥqᙠn|90m!IJKᨬᜧᒴᓣ)ᡠ◤!"*V`W

3⚪7
ᵨS'ᳮVk⚪஺⚪9:ᑭᵨS'ᳮÃDῃÐ⚪ᱥqᙠOkᒹᨵOឋ1sḄ?k᝞ஹḄk,16.Â12*MḄᑡµ78ÑÒÓ⍝ᒴÕÖᐸ×⁚Ù12*m,⌶e!Kᑖὃ⇋Kᐰkὃ⇋᝞S᦮kᑭᵨS'ᳮᑡ{ᑣῃ⁚Û%Ü!~;

418.᝞15ᡠABACDb'cdef☢ᐸ%hijk\hᑖᑖmAcᐝ"Ḅᙊo☢Ḅ'6)ᑗᙊoᙊqrb1200,stR=2.0m,cᱥuᙠZ⚪12:
ឤAI8ឤḄᔠ⚪஺ovE=bh=3.0mᜐ;x<=oo=4m/syf☢HIzᱥuA'f☢ḄzḄ-I8ᙳឤᑣᑭᵨI8ឤ-ឤ
)ᐵI᥅{ᦪᙳb஻=0.02,ᑣᱥuᙠ'f☢%⚪஺ᒹᙊohᑖ2ᐳW]^`20.᝞18ᡠ\bLḄ6ᵨᝅᙠᐝ"Ḅᩚ%-ᩚḄg=10m/s2
.18i26¡18bmḄ¢ᳫ¤¥¦§ᳫḄ¨©ª«¬ᑮAᩚ$JḄ3ᯠE¯°±¨Aᩚᡂ஺¦¢ᳫ<=ᙠ#⚪11:
ឤAᙊᕜHIḄᔠ⚪஺±ᑁḄᱥuiᙠµᙊᕜHIzឤᑣᑭᵨឤᑡc·¸OMᦪᨵ]c{¹º»ᑭᵨᙊᕜHIḄM¼⊡ᐙ·¿
)ᐵ⚪஺19.᝞16ᡠstbr,18ḄᙊÀAᙢ☢ᚖÂᙊqᜐᨵcᚖÂÀ☢Ḅᐝ"#$ÃÄO,ᙠÀḄᨬ5ÆÇÃc18bmḄ¢ᳫA,ᙠO21.᝞19,\ᩈ,abḄb6Ã᫏,ᩈ,*᫏,Ḅ18bM=4.0kg,aஹḄC·ZOr/2ᜐÃc18ÈbmḄ¢ᳫB஺¯¤ÀÉᐸÊᵫ¬IbVḄYZS=2.0m஺ᩈ,34ᐝ"#$☢%஺ᙠᩈ,a6ᨵ¢ᱥᙽᐸ18Qm=1.0kg,¢ᱥᙽAᩈ,VḄI᥅{ᦪ஻=0.10,ÓÔiᜐ4☟@Õ᝱஺:×12Aᳫ¬ᑮᨬ̦ḄÍ<=[]^`¢ᱥᙽ;x

5⚪13:
ឤA⚪Ḅᔠ⚪஺zᑁḄᱥuáXâ\Ḅã)¡Ḅឤ¸äå⚪15:
ᵨñᐵᑖ᪆
)ᐵ⚪஺ឤ
æ⚪º»çᱥuḄ<=ᐵὶé¿
)êḄ⚪஺24.᝞23ᡠ᪷óô6ÃÐõᙠ#$☢%஺ᐸC%·A3ᨵ22.ᙠ#$ᐝ"ãᩚ%ëḼAஹB'cSឋ¢ᳫ'ᳫVYZbL,ᵨ'᪷\=*ä¢ᳫ஺¢ᳫR☟@¤¥öᙠB3¡÷óôḄ%6ᙠC3¢ᳫᡠbLḄâ\ḄACᳫ¡᝞20ᡠ2¤¥¦ïᳫ☟@ðâøóKᜧ¢94.KᙠD3¢ᳫ<=ù¢ᑮú஺¢ᳫû6A▤ýᑡþCÿḄ
A.ᙠBᳫᨬᜧᐸ:B.ᙠCᳫᨬᜧJ-DC.A-CᳫḄᜧᳫḄ77^D.A-DᳫḄឋḄ2325.ᱥ150JḄ!"#☢Ḅ%&'#☢ᔣ)*ᒴ,-./0ᑮ2"3P4.ᐸ5100J4.67530J,ᱥ89)ᓣᑮᨬ;<=>?ᑮ@AB3.ᐸ஺26.DE〈GHIJ᝞.ᐸLE〈GMNABOP4
QRḄ.MNBCOP4ᙊ¡¢ᙊᵫᐝi£¤¡ᡂ.¦A§.MNCDOP4
#Ḅ,ABCD©[BCdᑗ஺ªyᜧḄᙳmḄ«¬DDᙠAᜐ}S⚪14:UV67WឤYZ[☢\]S⚪Ḅ^ᔠS⚪஺ᑮE〈G).}4!,.ME〈G-〈ᑮDᜐ.DAḄ;p®h஺`abᑁḄᱥde\].fᔜ\]☢ᐝi.ᑣabḄ67Wឤ.klᨵnA☢¯Y°*4E〈G,p±.CD²)ᔜ¬³᣸ᑡ.d¶·¬Ḅ³L஺\]ᱥoḄ,pᐵὶstVudvS⚪஺¸¬¹ᙠAᜐᢗ}<.ᙠᑮ2B»¼Md½E〈G☟.f<¾±23.᝞22ᡠI.yᬪᩈᙽ}ᙠᐝiQR☢)☠ᜋᜐᵨY.ᯠ<ᙠᩈᙽ¿i¢ÀᶍMBC²4ḄÂi§஺¼ÃᙠD²d/ÄḄ4oTᑁ.ᐳ-ᜋ☢o}ᐭDᳫ.ᳫḄᙢ☢;pH,ᩈᙽḄ஺.ᳫ〈«¬ḄᦪÇN஺ÈHᵫᵯ6G.E〈G[ʹoËd½i.±ᩈᙽd.Dᑗ\]☢ᙳᐝi.}ᳫÌÊÍᜐḄ᥅Ï஺nᵯ6ḄRᙳÐAÑ᳛P஺ᩈᙽ4ᵫ☟-.nᳫḼᙢ4ᳫᩈᙽḄ,p஺2422

6ÓஹÕI᧕┯Ø⚪ᐺÚ┯ÛD┯ÛÜ“ÞßÑḄÌà”[“"ᐹßÑḄÌà”d஺27.miஹm2Ḅ·ᱥ.☟ᙠᐝiḄQR☢).mḄÞãᙠg)ᵨឤFåæJ-------------------ç1ᐺG┯IJKLMNOᵨ@DQOᵨ@DḄRS஺¹.MND²4o<.·ᱥḄ,pᜧᑖê”ë씓30.4ᑡUVWXLজZ=[Oᵨ\ᜐ^,⊝`᝱b☟dᡈᒴ0gh=[ᙠSi:ViV2,íᑖêSiS2,᝞25ᡠjᑁḄlmSnI஺ᑣȲ4oᑁîÞᡠßḄÑḄᜧঝZ=[Oᵨ\ᜐ^,⊝`᝱b☟dᡈᒴ0gh=[ᙠSi:A.FSB.FSI+S2!2jᑁ@ḄDᡈὅqrᡈὅᜧmtuvmQnC.ï஻ñ஺ò+ò¢஻?+õD.-ymv12ঞᙠS᪵Ḅ:jᑁOᵨQOᵨḄDᜧRmtyz{vmQnᐺÚ┯Ûö÷øJ“d½í”[“ù½í”஺টᙠS᪵Ḅ:jᑁOᵨQOᵨḄDᜧRmtyz{v}R28.ᱥᙽᐝiḄ#☢).#☢ᐝiḄQRᙢ☢)¢᝞26ᡠI§.ᙢmQn☢)ú.ᙠᱥᙽ'#☢iḄNûL.#☢½ᱥᙽḄ*ᵨ஺~WXzḄUA.ᚖý\]☢.ßÑòA.জঝB.জঞঝC.ঝঞD.ঝটB.ᚖý\]☢.ßѱòᐺG┯IJLḄ:ᜫ.C.±ᚖý\]☢.ßѱòQD.±ᚖ\]☢.ßѱ஺777^^777777777777777731.mḄ^RḄḄḄᙠjḄOᎷUR!Ḅஹ\#ឋḄ஺*OḄzO26ḄḄOi~+,Ḅ0=᝞29ᡠ஺5nᐺÚ┯ÛÓö÷“ᩚḄÿᔣ”“b1ᓽ9:89ᔣḄᜳ¢BCEḄᔣ”஺B
26ᑮ£OḄz4:;Ḅ¤BᜧE29.᝞28ᡠᙠLḄᩚABᔜᙳmḄᳫᩚ!"#᥅%Ḅ&0'()ᩚ*+,-.#/012᤮4஺56ᩚ'ᑮ89-.:ᩚ;AஹB=ᳫᑖ?@ABCDEVB2829

7W=FS=lxlO5xlOOJ=lxlO7J஺4.ᑖ᪆()ᱥ+ᙠ-A/ᑮCḄ2ᨵ4ஹAB7Ḅ8ஹAC7Ḅ᥅:ᐳ<=>?24>?@=஻▭/?,E☢G᥅:>?W/=-஻஻ᔞJ2ᵫLᱥ+ᙠAB7MḄ8NO2>Ḅ?PQRST஺᪷VWQXᳮ
%=0,¥ὃ§ᫀᡠmgR-/jmgL-W-0AH1.ᑖ᪆«L¬;ᱥ®Ḅ¤T,±ᯠ³;Ḅ¤Ft^T஺Tᙠ;ᱥ®ᓽ-mgR-/.imgL-6(J)@DḄµ¶ᜧ·ᯠR¸yᐸᔣ:ºᙠᦋ¸¼½¾¿⚪U¸@DḄ¿⚪஺yUᙠÁÂḄ~ÃÁÂjḄ᥅%RÄḄÅÆ4³;@ḄDÇt^Ḅ5.ᑖ᪆()ᵫL_☢ᐝ/ᦑbcQdឤ2fghḄgNO2giᱥ+>j¤;ᱥ®@ḄD஺ȤFḄᜧᔣqR¸ᡠ~F@ḄD!~ᵨÉÊ?2ghḄgឋlQmn2og>Ḅ?Ḅᦪq(gឋlQḄmnrst஺uBW=FScosa9ÑÄÒ஺ᵫ1!Ôᙠ+,☢Ḅᜳ¢ᵫa¸ᑮBḄµ¶¤ᡠᙠE☢vwxὃ☢2ghz{ᜐD~vgឋlQḄwxὃ~2ᑣ᝱AFḄOᵨḄ-×ᜧLEA=mgh+^mv20S=SS2=»——/sinasmpi᝱BE=—'Wgh+0BW=W=FASFh(-4-----$)TFsinasinpᵫbcQdឤXWgh=-(mgh+mv2)=-125J஺u2.ᑖ᪆«Lᙊᕜᑖᡂ#▲[ᐗià[ᐗi!áᙠS9â6..ᦑAW/=FAv,ᑣ'ᕜᔜ[ᐗi@DḄèᦪᑖ᪆()ᵫLENPḄ2S᫜Ḅ▀ᡭᑮ᫜E☢stḄW—Fx2nR=10x27rJ=2ChJ=62.8J.ᦑBz஺2ᑭᵨtᦔ"GᑖḄEtᦔᙢ2᝞¡6Ḅ_3.¢ᡠ£஺ᨬ¥ᵨ?Qᐵ§24ᡠ>Ḅ?tL4lQḄ¨©r2⌱ᵨABᡠᙠḄᑖ᪆«Lᵫ^ôḄᱫö-×Ḅᐵø=1஺3%+³Uâឋᐵᦑüý☢vw4lQ☢2ᑣ«_¢ᑖ-¬ᡠ¨©Ḅ4lQv100mµ¶Ḅᱫö@ḄD!þOU,ᙳᱫöøᡠ@ḄD஺ᵫ⚪ÿ
Ep-./)pgS00+(1)pgS(0᱄*pgS(hi-4=0.05x105xiON=5xlO4N,ᡠ100mḄᙳᱫᡠ4>Ḅ?=(᜛gS(¯-⛳)2^=5x104+(100x103+5x104)27.

8ᑖ᪆()᪆±F>Ḅ?tᦔv¡8FlஹF2=ឤᡠ>?Ḅ²ᦪ³஺ᓽu,==1Om/sF?W=G•S+BScos60°,´FI=F2=F=100N,ᡠ(4)Pty-/Jings=mv5-0,5=48/7iW=FS(l+cos60°)=150J,ᓽB⌱⚗¶·஺¸⚪3º»T¼Ḅᙳ?᳛³¾¿?᳛ḄÀ11.8.ᑖ᪆()ÜÝឤX?᳛ÞW¿2ßḄᱫFàáÉ஺ḄOᓄ´Oᓄ,ᐸnÉaäá¬Oᓄ2ᐹ+Oᓄæᵨ᝞Ä£ç¡⊤£ᑖ᪆()t=2sᑁ2ᱥ+ᙠÂRÀᔣÄÅḄ஻=ggÆ=Çxl0x22=20m,P=Fo—>oT7Æé஻IÆ-y="ÆÓᡠᨵ@=஻7g/z=O.5xlOx2O=lO(V,ᙳ?᳛P=^=50W஺Æ=/"¿2=0,ᒴÉaᙠt=2sÈÉᱥ+ᙠÂRÀᔣḄᑖÉᓃ=82=20஻஻5,ᡠt=2sȾ¿?᳛ᨬᜧÉ¿2F=f6P^Fv^fv,minmnᵫêÜÝÉëᑮᨬᜧ¿2a=0,P=mgV=100WoylF=f=kmg\=T^-=12m/sP=Fq]n°,“9.kmgᑖ᪆()ᙠ0Ëh¿Ìᑁ24ᱥnÉGᓣ2ÎnÉvÏ,ᑣVÐÑÒÓXØìbÝḄÉëᑮᨬᜧ¿2éXNbÝḄnÉvw஺º»íîé~2ᑭᵨÔÕḄ±Fi=mg+mai,ÉM=ait,ᡠ±Ḅ?᳛vP1=m(ai+g)ait;⊝ᩩñòóô᧕TöbÝḄᨬᜧÉ஺ᙠtiËt2¿Ìᑁ24ᱥᒴÉGᓣ2±F2=mg,Évᡠ±Ḅ?᳛v12.P=mgait|.ᑖ᪆()⌕øᢝÜÝnÉPO2ò⌕øᢝᐸᱫPO2ÜÝ?᳛àáV2ᙠt2Ët3¿Ìᑁ24ᱥ¨ÉGᓣ2ÎnÉᜧØva2,ᑣVÐÑÒÓXÔÕḄmᜧ´mᜧ2úPëᑮûX?᳛Pû¥2PQümn2ᓽÜÝòPQüýᢝᒴn±F2=mg-ma2,ÉO2=aih-a2t,ᡠ±Ḅ?᳛vPi=m(g-a2)(aiti-a2t).ÉþWí.ᐹ+Oᓄᵨ᝞Ä£ç¡⊤£ÙGᡠÚ2ÛᨵB⌱⚗¶·஺10.Fஹ_9=ma1஻PO2=atfὡ=P})᪆(1)/=஻஻zg=5x10'?/,v,„=y=\2m/sP=Fv-^v^^FV,—J(2)F-f=ma,F=7500NlitF-f=ma/஻=0,ᒴv,="=8WJ/Sᒴ4=᳛ᜧᑮP,ᢝᱫὡ,-/=஻u,=at,Z)=16s.tᡠ!"#ᑮᨬᜧ%&'()ᔊ+,-./0ᒴ12ᒴ./3ᢝᑮ!"᳛ᑮp4Ḅ67ᒴ#ᑮᨬᜧ%85,ᑣ(3)F-f=ma,F=60007V222

9ᙠ᦮-./{ஹ᥅¾1Æ☢ÑᢝÒᵨᐸÑᢝ஺7ᐸ).0=at1¡p/8L,ᐰ./ᵫJNᳮA0<ᐭᦪ?@A:=16smgSsina-/.ingcosaA=஺-Â,nv^aF-king-mamgSsina+[mv20uFG0H"ᒴ%IJ3ᢝKLMNOH"᳛#ᑮ4N᳛Ḅ஺AÝ=____________24mgeosaQR+SMTᑭᵨWXYZN[1IJ\]^_`a᧕cdH"ᒴ%IJ3ᢝḄ஺15.13.ᑖ᪆ij0¸ᙽàAT¸ᑮCTâᨵ1᥅¾ᑖ᪆ij0⚪@ᵨH"lJmn⚪Ḅopᓽrᱥtuvᑖ8,-./ᜐᳮ0rYM./Oyᡠz{Ḅᨬᜧ||ᱥt}ᱥtᨬᜧ%ᒴ~ᓣYmgh-/jmgcosa•M"mgs2=0-0M-./GᵯJH#ᑮᨬᜧ᳛.YZ-./OᵯJHMᨬᜧ᳛|ᓄåA0h-4sl-4s2=0A4=Yᱥt|⌲F|ᱥtᒴ~ᓣ.ᙠᒴIJ./%8àçèGé@êdâ⌕ëdÆ☢v1ìíîᑖL%ᓽ@çèdJ᥅¾Äᦪ஺a="=m/s2=5m/s2,%q===10m/s16.m8Fm120ᑖ᪆ij0⚪ᵨJNᳮcjïᵨIJ\ஹWXYZN[cjåð஺~ᓣḄ4="=ᛞs=2s,~ᓣv%8/7=^=Fj=10m"ᜮῃóḄᐰ./ᵨJNᳮA0a52a2x5FL-k?MM஻zõg51=ᙠ᳛ឤNḄ./ᨬᒴIJḄ᳛8"öῃóᵨJNᳮA0᜜ᱥtḄ¡W=P,"2-"g/?2,J2ᓄ§8¶A5=S-S2ᵫ÷ᩭᑡ"Oᒴ'úḄᡠû=ZMgᵫJNᳮA8J2-஻9«-4"ᡂᵫ~È/jAAS=*-஺M-m<ᐭᦪ?jAf2=5.75s,ᡠZ=Zi+f=7.75sᡠ◤³´87.75s.17.2FG0H"IJḄᨬᜧ%OᵫH"ḄᨬᜧᱫµNḄ¶ᨬᜧᱫOᵫᱫᑖ᪆ij07AஹBஹCḄÿᙳm°BஹCABḄᐳᱥḄ·%µNḄ஺QR+SMTᑭᵨWXYZN[_`a᧕cdH"IJḄᨬ᝞BCḄᐳBஹC᪀ᡂḄᵫឤ!"ᜧᒴ%஺14.mvQ=2n\V[ᑖ᪆ij0¸ᙽᙠ¸J./⌕»¼᥅¾ᐸHÀÁ´ÂÃÄ8¸#A$%CḄ&'()ὅḄᐳ஺2஺AஹBஹC᪀ᡂḄᵫᙽᡠ{᥅¾F¸ᙽÅÆ☢ÈᔣḄᑖᡠᨬÊËÌᙠÆ☢ÍÎ஺

10ឤ!"2moo=3mo2᧕ª!6=sinTg#CḄ0L,ACḄ᥅45ᦪU,ᑣ9᥅4:;<=>?ឤ20.@!"Q=/jmgL=B,2mv[+^mvlᑖ᪆Z"bÁÂஹÃᳫ᪀ᡂḄᙠÄŶᔣXzg᜜ijᵨᡠWᙠÄŶᔣឤ஺ÇᵫbÁÂḄÈzÉᙠÄŶᔣḄឤÊᡠWÃᳫḄ#CD:ᑮAF%CḄ&'(CᡠHIḄJKS,ᑣBஹC᪀ᡂḄᙠÄŶᔣḄᑖឤÊÃᳫᙠÄŶᔣḄᑖÊ஺Ç5ÁÂஹÃᳫ᪀ᡂḄḄno?ឤᡠW“zgLsin஺=yrinv,29?ᳮ@!:jumgS=i(2m)z;2!ফ஻)V2ᓽ4=,2gJsin஺.Ï´µ¶ᔣḄᑖ஺ᵫWXᔜ=Z!m=[.LtD18.21.ᑖ᪆Z"ᵫb$ᙽᙠe☢Xgᑮ᥅4hijᵨᡠWᱥmḄno?p⌲rᑖ᪆Z"#ᩈᙽ>ᱥᙽᨬᐳḄV,ᵫឤ:stᨬᱥmᙠBECᙊxXjyz{|Ḅ}~஺ᵫbᱥmᙠᙠBECᙊxmv=(m+M)vXjyz{|Ḅ}~ḄIiᡠḄ஺="g(/7-9),᥅0#ᐰIÓᜫḄno?E,ᑣᨵ"E=1mvl-^(m+M)v24iᡠḄᔩ=—*mgcos60°ᵫ?ᳮ!"ᙠᐰI5᥅4Õ:;Q=24mgsᑣ9?ឤ@!ᙠIÓᜫḄmg(/?)cos60°=0-mvQno?"Ö=£—Q=2.4J.:.s=280m.22.19.ᑖ᪆Z"Ï⚪ḄᐵÚ¹⌕ÜᑮÝÞß(AஹBᳫḄ>CᳫḄᑖ᪆Z"ᙠᵫIᨵino?ឤ஺#Aᳫᑮᨬ(Ḅ"AB\|àḄᐵ஺ᙠ᝞21ᡠºÞßBCá´µ¶ᔣᡂ஺¸஺5BCáz?â0ãᳫḄUB6ᑣ9no?ឤ@!"ZäåæçᡠWBஹCèᳫḄéB>êᙠá¶ᔣXḄᢗìíîï,mgr-mg2=2"¡/+\஻'ᗗ/ᓽvcosd=VgSmO0c9ᙊᕜḄ¦§@¦"V^=2VB.ᵫno?ឤ@!"ᵫX¨©=@ª!i=«^17ᙶñ)=*mV,2+2(amv2)B#ᙠI®¯OAᔣ²³K´µ¶ᔣḄᨬᜧ¸¹஺(᝞17ᡠº)ᑣ9Ç5tan?e=2ïno?ឤ@!"஻g6—ᳮ”½=()

11ᵨf⊤}5s〈u)Ḅ᥅
ᑣs〈u}/l2gh2(h-y/3L/2)ᵫWXᔜ=@!:V-h2+1}A=ঠs〈u}cḄ᥅
4==2.7ড23.ᑖ᪆Z"Ï⚪ḄᐵÚ¹⌕ÜᑮᳫḼᙢ(Ãᳫ>ᩈᙽḄḄᐵ஺5Ãᳫ>ᩈᙽø¹îùúûḄᡠWÃᳫḄs>ᩈᙽḄ6ᙠᚖµbúû☢+ὅ)C᥅
feḄQ=/஻?ঢḄ¶ᔣXḄᢗìîïᓽ"01cos=%sinᙠ}wvVWX}¡\Ḅ5f¢$஺Tkᑁᵫno?ឤ@!"ᵯN{eḄ/7¤=¦ণ[ᵨ%}Ḅஹ"¨᥅
fᓽᵫX¨©=@ª!"W=3Nmv^+Nmgh+NQত□=12gH•sin6,v=12gH-cos0.2ªA¢«+}Ḅ¬/L,ᡠvT=NLথ023.ᑖ᪆Z"Ãᳫ?Ḅýþᵨᔠ᜜
ᩭA-CᳫḄᔠ
ᔣὶ¯ঢণত©,\²=³´5£+g·(11)ᳫC-DᳫḄᔠ
ᔣᳫᡠB஺A-Cᳫ!
"Ḅ#$%ᳫḄ&'ឋ"26.)&ᡠC஺AஹD+,-ᙳ/0!
Ḅ$%'
Ḅ,┯67¹ᡠḄ$%º
FᱥEm2ᡠḄW=FS2,ᵫ»ᳮ\:ᡠD஺⌱BஹCஹD»FS=-^mV22224.ᑖ᪆5678ᯠᡃ;<☢Ḅ>?@ᡠABCᱥE<☢FGP5GᓽAD஺PᑮᨬJGK+▤MḄ#&NOPᜫCᡂSTḄUᱥEGPᑮᑖ᪆¾┯7᪷ÀÁឤA¹ÃVÄὑḄᓄÇÈᐰÉÊᓄ/ᱥEᨬJGVWXPᜫḄNO/E,ᑣ100/30=(150-100)/E,ᵫ[\E=মᡠᱥrm&mḄ¨¹Ḅ஺ᡠ¹ḄḄᜧ$%2E

12äᵫ஺[k'
Úᔣåᯠᚖ%<☢BCᱥᙽAḄ,ÑÚᔣᓾCç,-012ᑮ4O2Ḅ5678஺᪷9:ឤ?@T,"T=4B“g.┯67ᵫ%ᩚḄ'
ðᚖ%ᳫḄvÚᔣᡠñᩚAஹB+ᳫᙳÛ஺ᑖ᪆E┯G"HI┯JḄ஺KLMᱥᳮOPQᨵRSTUVWᙠXYZ[\OP]^_Ḅ\`ᜫ஺ᐸc12Ḅd!ᑖ8eOPᑖ᪆¾┯7UòᩚÊᑮó,-kAᳫ&BᳫḄwᑖô/
&
஺᝞fgOP12&hid஺0Xᓽkl[Xmn[7ᔣḄᜳ86,᝞q30ᡠÖ×ñᩚஹᙢᳫஹ+õᳫ᪀ᡂḄo÷/Ẇùúabᵫ%ᩚ&ᳫḄ¢Ôrᑣ/f=Rsin஺ᵨ
ð&$%0ᦑo÷NOÁឤ஺ûüBḄᨬýG/0!
"mὃz☢\7Jgt=5R-Rcos6»,ᐸ]2mgL=þ/+mv}+mgLὶv"6=w=xὺ஺ÿAᳫBᳫᙠᔜḄᦑ%=2%fOPXz[OP஺X{[X|}~h᝞q30ᡠr.ᵫ)X!lᵫV-VB-•ᦑXz[஺஺`ᜫ12ᨵ=gr=/M஺A᪷ᳮ!"#ᩚAஹB&Ḅ'஺)AᨵfeOPᳫᙠn[h☢ᑁ&ᙊᕜd஺012ᑮ4O25678"᪷^_:ឤ:<ᨵ^mv,2=ymi?2+mg•R±ᡠ,=-0.2mgL.)BᨵM+mgL=1஻.-0,ᡠW=0.2mgL.B0X12ḄZ?8T,ᑣT-஻?g=஻iὶv"7=29.K9┯"8“ᙠ᪵Ḅᑁᵨ?ᵨ?Ḅ'ᜧg5g”┯⌱B஺ᑖ᪆E┯H1158ᜐ)h⊝¢᝱¤?ᜧ7ᔣᙠg¥ᑁ¦9ᜧ7ᔣ஺oᵫឤ?&'Ḅ¨©!¨H225஺ᐵ)ᵨ?ᵨ?Ḅ'⌕©ᑮ¬Iᵨᙠ¤ᱥ®,¤ᱥ®Ḅ¯°!ᡠ'!H335H445஺5⌱⚗ID஺30.┯"²³Mᙠ´"K⍝⚪ᐰOP¸¹᦮®»¼V'q30