LỰC HẤP DẪN. Câu 1đúng !"# !"# $ %&'()*'$+%&'*',-$ %&'()*(.*',-$%/()012 Câu 2$/+3đúng. % 45)6$ +%3789 :(#';$ %9 :<=-9(.0:$ %9(.0:1,>3, ? @ A $ Câu 3B-C(-1(#DEF*5)0G,:HIG"(. J+H1KL % M Ng GM R= +% ( ) M Ng GM R h= + % M Ng GMm R= % ( ) M Ng GMm R h= + Câu 4) @ O5L %GN M +%PG M N M %GN M %PGN Câu 5&0*GQ;5(.RSSSSHTG$DU V-9(.0G,CW5(.MS$XYTSGN M $ %P6)$ +%ZO %X-)$ %(3+;$ Câu 6F5(.0:WUVWG[4 UV,-L %EWG\I$+%EWGG,[$%EU (]$ %^1$ Câu 7<;:;:L %90G,:(.7_GIVV0 :$ +%9(-J$ %90G,:WG(: "(:`+aH7J>$ % !"^*]3W -WH4H 5(.9(.0WG$ Câu 8!1 @ @ H G^ @ A A @ () @ bP$FHG, ? G A G A A cded f + A g A A A %g f A A @ () @ +^ f + h %\TP +% MiP % cP % TP Câu 9$B) A A A @ (DEF*5(.!0(.J_1KL % M NM gR G= +%$ !YEd M % M NM GR g= %$ M NM Rg G= Câu 10!,:5(.T*H G"9(.TSP$F3:-G,3G GMdedL+J%49(.+OL %TSP +%RP %M*RP %TP Câu 15!,CW+(.W)I+G">GR-:5,- RSGN$P;CW+(.W-',(: j$DR*:50 ,-cTGN$XV0j+OGIV0h %S*TkI +%S*cbI %T*kTI %S*kMI Câu 17E5H+G"!"^ S +J!"^TilSG$m,Y cl\SG-+G"!"^45)+OL % S N bg +% S N cg % S cg % S bg Câu 18 j*5)<+On5) $P;W: `, G#4]H,:o) jG# e+6C259(#_,%%R +%M %NM %Nl CâuTbVh!,(#9RSSPK G"$XG (#,- %YRSSP$+%pRSSP$%-)RSSP$%,)G(#K $ CâuMS!,:5(.M$P;": G"49(.MSP$Z; +Jd*3:9(.RP4W":H,- GL %d+%Md %cd %ld CâuMi9V$XG,qH G"4, -L %-)9(.0q$+%6)9(.0q$ %+O9(.0q$r%+OS$ CHUYỂN ĐỘNG CỦA VẬT NÉM NGANG T Câu 3$Zs A 5() @ A 1+Z$ f G, A @ 'G,8J*+s() @ ? ) f + Z() @ _ A G_()) A 1 A 1 @ $Z ? C( A ? ? 1g A $& t + A f () A f A L%s @ G A () A Z +% ? f @ G A f A %s @ G A Z %( ? 1 ? ? ) f Câu 4$!,CW+(.uG_()-:5I,- YMSGN`, lRG)75c$&6IG+7e_()%0CW++O+ h%cSG+%lRG %kSG %bSG Câu 5$!,q+^9_G,>0G,G"+4U:OGYT*MRG$ F6Gu+*)75>3GGu+XYT*RSGe_()%$ XYTSGN M $#)0+L %S*MR +%S*cR %S*R %S*TMR Câu 6$!,q+^9_G,>0G,G"+4U:OGYT*MRG$ F6Gu+*)75>3GGu+XYT*RSGe_()%$ XYTSGN M $5,0 +V)6+L %TMGN +%kGN %l*M\GN %cGN Câu 7$!,CW+(.uG_()-:5I,- YMSGN) 75c$&6CW+(.uG`,hXYTSGN M +6CKW0 1J$ %cSG +%lRG % kSG %bSG Câu 8$!,:(.uG`,YbG$B:5+I,- $IG70: T\G$J $XYTSGN M $ %TbGN +%Tc*lGN % TSGN %c*TkGN Câub!,:(.uG`,YlRG-:5I S MS Nv m s= _()OG$ +6CKW01J* M TS Ng m s= $IGuG70:L %cSG +%kSG$ %bSG$%T\SG$ CâuTS&:H'G,,*:v(.uG-:5I S v uur *'V:vv (.W)1:5I$Z6CKW1J$F;:Vh %B:v>G(-:vv$+%B:v>G:vv %B:v>G'G,V-:vv$%#),5(.0G,:$ CâuTM!,:(.uG-5,cSGNH,Y\SG$Z6CKW01 J$XYTSGN M $IG70:8L %TMSG+%l\SG % cS \ G%\SG Câu 13!,:(.uG_()-:5 S V uur `,-G"$9= >,w75w'-8JuG*w7_ S V uur *w(-xK75 (-*5#VuG$/()4Cy>0:L % M S M gx y v = $ +% M M S M gx y v = % M M S gx y v = % M S Mv y x g = Câu 14!,:(.uG_()-:5 S V uur `,-G"$9=>,w75w'-8JuG*w7_ ():5+I*w(-xK75(-*5#VuG$,-: 50:>#3G78+O+3KL % S v v gt= + +% M M M S v v g t= + % S v v gt= + % v gt = Câu 15!,:(.uG_()-:5 S V uur `,-G"$9= >,w75w'-8JuG*w7_ S V uur *w(-xK75 (-*5#VuG$#3,0:`VuG;V>G78 +O+3KL% Mh t g = +% M h t g = % h t g = % Mg t h = M Câu 16!,:(.uG_()-:5 S V uur `,-G"$9= >,w75w'-8JuG*w7_ S V uur *w(-xK75 (-*5#VuG$IG7XJ_()78+O+3KL % S g V h +% S h V g % S Mh V g % S M h V g Câu Ti!,:(.uG_()-5, S TS NV m s= `,-G"$ 9=>,w75w'-8JuG*w7_ S V uur *w(-x K75(-*5#VuG$/()4Cy>0:Le-YTSGN M % % M TS Ry t t= + +% M TS TSy t t= + % M S*SRy x= % M S*Ty x= LỰC ĐÀN HỒI Câu 1"3G0zh %Xz7=:Jz+8+;>$ +%F,+;>0:-4z]-*80z1 ->$ %Xz,-<=-,+;>0:+;>$ %Xz1(.(--+;>$ Câu 2(),-0zh %B-',+;>(*,-0z,J(-+W 0:z$ +%B-G";7V+8+;>*z1-G";7V$ %B-:(q7***z(-9_0:$ %Xz,-<=8-,+;>0:+;>$ Câu 3$!1 @ f 7 A f f ( @ MSG$F f 7 f MlG4( @ f 1 f ? A +^ f RP$& ? ( @ f 1 f ? f 7+^ f TSPg f f f ? A +^ f + h %MMG +%M\G %lSG %l\G Câu 4$/W_G,:5(.+O+ q7,KFYTSSPNG3q7 {(.TSGhXYTSGN M %T +%TS %TSS %TSSS Câu 5$9V$/W_G,:9(.+O+ G,q7, KYTSSPNG3{(.TSG$XYTSGN M $h %TSSSP +%TSSP %TSP %TP Câu 6$T f 7 A f f ( @ +^ f MTG$X f 7() @ ( t 1 A @ @ T f * f f @ T( @ _ A +^ f R*SP$F A f 7 f MRG$& ? 1 @ ( A ? f 7+^ f + h %T*MRPNG +%MSPNG %Mc*\PNG %TMRPNG Câuir'G,q73_G,:5(.cSS4q7{G,>MG$P; _ GG,:5(.TRS4,{0q7L %TG+%MG%cGr$NlG Câub!,q7_:GYTSSo{RG$F_:G|*q7{cG$4GG|$ %S*R +%k$ %iR %S*Sk$ CâuTSP(#_G,:5(.S*cI(-0G,q7eI 58%* 4q7cTG$F_ GG,:MSSU4q7ccG$,K0q7L % b*i NN m +% T NN m % TSS NN m %F;CW LỰC MA SÁT Câu 3$9saiL %XG(.<7=(.()5U:a$ +%&(-0G(.;;-G";7V(.3,()5$ %B >OG G"x 80G< %XG^<=-u1-G";7V=5G^+O=5G(.$ Câu 4$9+3đúng$ %XG(.,=JG";7V$ +%XG(.,J0G";7V$ %FG,:80}GK 4G<-)>$ %B:OG G"OG49G< :+O$ Câu 5$/+31J7h %XG<>-)G(.$ c +%XG<115-":$ %XG7=`"5":;7V$ %F:3,"7(-3,5-G";7V-4G$ Câu 6$ f g f 7 ? 1 A ) A @ 1 A G A ( t MG^ @ A 7 A A ( @ A A _ A G^ @ A 7 A ^ h %^ +% ? G %11 ? %'(#.*3^ "WG Câu 7$!,0>5(.bS(.x $&=5G(.U0>S*RS$&6~0>_() +O+ hXYTSGN M $ %}YlR P +%F = 450N c) }•lRSP %}YbSSP Câu 8$;1K0G(.(-*;Vh % mst t F N µ = r +% mst t F N µ = uuur r % } G Y€ $P r$ mst t F N µ = uuur Câu 9$!1 @ A ? A @ () @ TSSSP^ @ f f OG$&=5G A g ? ( t ? f f f S*kP$& @ 1 A G A () @ f S*RS$P() f G1 A @ ? ? t A @ f ? ( @ _()OG,-L %lRSP +%RSSP %RRSP %kTSP Câu 10$!1 @ : @ 1 A f ,-TSGN(. G"x$& @ 1 A G A () @ ( t : f G^ @ x f S*TS$& ? :() @ TC t () f + g f ( f @ hYTS %MSG +%RSG %TSSG %RSSG Câu 11$•13,xG"'u4L %9+O-W +%Xu+O-G-G"(# %11+O%9+O-u Câu 12$XGz>:a3, +G":ah %!< +%!^"G(.%!^ %!(. CâuTl9V$0G<L %(.-:50:$%;;-G";7V$ %1-G";7V$+%(.-50:$ Câu 15$e%!,7_)> (#5-:5,-TRGN$X{G,- cSSSPG7_`TS$F5(.07_ %TRSS +%MSSS %MRSS %cSSS Câu 16$!,(#9(.TRSPTcSP-G"x *{ ~G,:9(.bSP(. G"x -:512$XG :,-L %6)cSP +%cSP %bSP%X-)cSP(6)bSP Câu 17$sZ~'G,'"TMSS_()OG$s~- RSSPZ~-cSSP$P;GKWMSSP450'+ h %T*SGN M +%S*RGN M %S*\iGN M %S*iRGN M Câu 18$!,(#9(.TRSPTcSP-G"x*3 ~G,:9(.bSP(. G"x-:512$ XG,-L %•cSP +%cSP %bSP%X-)cSP(6)bSP CâuTb!,:(.G G,G";7VOG$P;=J;7V0: WGcI4,-G(.U:G";7VoL %WGcI$+%^cI$%WGkI$%12$ CâuMS!,:(.G G,G";7VOG$P;:50:^M I4,-G(.U:G";7VoL %^MI$+%^lI$%WGMI$%12$ CâuMT!,:(.G G,G";7VOG$P;5(.0:WGM I4=5G(.U:G";7VoL %^MI$+%^lI$%WGMI$%12$ CâuMM!,(#~G,:(.x OG-G,OG ,-cSSP$F*,-0G(. :oL %-)cSSP$ +%6)cSSP$ %+OcSSP$ %+O9(.0:$ CâuMc!,(#~G,:(.xI OG-G,OG ,-lSSP$F*,-G(. :oL %-)lSSP$ +%6)lSSP$ %+OlSSP$%+O,- W0 : l . %&'()*(.*',-$%/()01 2 Câu 2 $/+3đúng. % 45)6$. M NM gR G= +%$ !YEd M % M NM GR g= %$ M NM Rg G= Câu 10 !,:5(.T*H G"9(.TSP$F3:-G,3G