1 SỐ ĐỀ KIỂM TRA VẬT LÍ NÂNG CAO 10 HAY

nA m1v,rrf xndr roNC F{Kz 20102011 Ltr.4 Thili gian : phrlt lEinh nglfa dsng lu,omq ori+ _l vt , vi6iUi6u th{rc , ph bi6u vA vi bi6u thrtc dyh lugt b6o tdacr dng Xuqng cho h gdrn 2 vflt ? }Hay,n6u d4c didm ro{tg lgc cfia vtrdn. ffidd c}ro bi6tphuong ptrd.p xdc dnh qng tarer qra vgt rdn phfrng ,,rn6ng ? a 3M0t 6tO ed khdi tusng t500kg da4g chuyn dng vdi vn t v30qs .Xde d{nh : aES biem thi0n tfgng nng crea 6m f nO Ui ngnn fi vn tde tr0ms. blT:fnh lge l1fiA eung blnh ,bi6t nfisg dureg mA 6t6 ehpy chgy o,ug i gi hem l n00ma 4MOt vt.c6 kh6i tqrg 0;S kgduqc tle i ft d0 eno z so v6i m ddt Ei6t eo nng ca v6t trd 100J.ICy g:l0n .Ctrqn gdc ttrd nf;ng tar m6t ddr . dTInIx d cao z.? . bD(da di{rh d0 cao ca vt mA tat dd dg,ng rdrig e6p 3 nfu t}ld rrf,g.? 5 Thd nAol qu6 tirft dfurg nhiet ?Fhat Ul6u va vl6t hi6na tht}e eila dinh ur B6rLqyMari6t ?Ve dflng durg dene nhi€t eong h toa d0 (V) e N{0} he g ma A i=r, :lte .ifu tdc eila r6t , cd d0 6mv13nms vd ed anrng kh6ng di .Vqn tda ctia v0t mrz cd d0 til vz= 2nms vdr ed laury nghi€ng gda 500 so vdi vl :Tim t6mg d0ree lwm:e e0a hP 7eA0t dmnag m6y cO khdi luffmg.m:600kg chuy6m dmg dr6ng dng n€n sm.h : 10mm (kh6mg cd rana s6t ) . T{mh cmg aa =dgpgco dB keo thamg m6yl8m mrie Z rrqnmg fiiW . aThaerg mrdy di 6n th6ng dtu, h ThenE dti dlryn nqaqh de dna vOi a = I nn . Cho g : X0 ms2 . She0t thamh AB: ddllgrchdt c6 trqng lddng F = I0 N v AB = nsm. Tharuh AB ed thd quay xunng quarnh tr trqc nguogWe0 vdi. CIA=30crn. Edu Aa6treclvftrmgFr=30N. tsd quru oa ug t 6o ul f+l riAu B moc v4t mme ed rrqmg truo. ras ? hims roul irae r 9 Cho 2 grarm khf chidrm ttrd mah 4 flit nnniet dO flC . Sau khi mwg ndmg 6Ec 6p c6 ffi6 fiurymg ri€ng eua khfl d t3 il . Tlrn mhift d khf smu khi mung mdmg ? nG d0a hi drdp khdi nnrEng ms u dam6g cd vgm t vs= 3 ams ddu va cfiaErm vo nmr hi uhttry rf,mIa damgdtugy0m cdktaIurqe cmz=riahr.SauvacftWrmhidadydnh ehuydmdmgvdiv6m gdp 3 ndn vm t hi rhdp T3m vm ffi efia eda vi8mbi EErr v ehsnna ? r) p Iy ,t ,a\_ s. PH Bf rsr rlec x{, u (z0rr2012) Ar r,{ ro nrAuc cAo , cAu.r : (r cri6m),,.T,:i ptuole t,t1Xlilli;ffJiilr . H6y suy ra vi chime mi,h r.ang zipsudt cria ch6t khi ph rhuc.,;vio,r0t d6 ph6, trrkhi ? CAU 2 :(1,5 ei63) Yqr6 t6 1,5 tiin chuy6n dgng flrfrng dAu vdi vfln (c 54 krMr. Lgc phrit d0ng c6 ctQ lon brng :|%hqTq luqn8 cfa xe vi coi nliu lgc c6n trlc rrg vdo xe Hrong ;6i klri xe chuy6n dQng. Liiy e= tO gVr{ a. Tinh c6ng ctra luc cfln tr€n qrfirlg rlucmg 500 m. l,: f , gtug uong ttr, n6u xe tit m6y mi kh6ng harn phanh, tinh cfgng nng cfia xe sau khi di th€rn 10 m nifa. { . cAu 3 :(1,5 di6m) a. S1r n.dei la gif Viiit cdng thric tinh chiAu dicfra thanh sau khi bi nung n6ng 6u 16 t6n vi dcm v flmg ctpi hrqng trong c6ng thfrc b. Tpi sao gioa hai thanlr ray thmng sit ntii fi,5n nhau nguoi ta kh6ng d{t chiurg thflt s6t vio nhau mi phf,i chlr.a m6t khe h nh6? e I o MoJ thanh v dyfg;iit dai. 11 T gJ,hieJ q0 ?g c. Tinh xgm ptrf,i chrla rnQt klre h rQng bao nhidtr mm t4 rc,;,a,a,il;d;;,i:;tTr1,?fl Hffl;HxTttrs,itT;itr:rf iffi Hlt,ri cAu 4 :(1,5 cti6m) M6J vfllgeir.hie du6i t6c duns d,itr,};Jf,; il c6 crQ r6n B i Fs : Fr:ttNviF2.Choui6tfirfr v Q a. Emh6yvEh6balucniv. b. ViSt bi6u thrlc vC eidu kiftr c6n bE rg cfia vgt ndy. t. Ttuh F.,. cAu s :1i,s diiim) .ryj9t gglrgthric rinh m6men nglu lpc vd ch6 rhich 16. b. PhAt bi6u quy tic m6men Ivl0tthanh chiin tluong dei 7,8 m, c6 treng lugng210 N ye c6tr9ng6m G c6ch dAu b6ntnii ray t) 1,1 t Thanh nnv rg pg ryuyoiisil;irv nam ngang o cach A 1,6m. H6i ;li? flf;|ffifftrd;aiL:T_tT,i tIc d,ng ,ao .tau uoipriu,ror n1;ilffi rir,ae cAuo:(1,5 di€m)MoJbinhkfnttr6tlch 0,4nf ,chakhie zT

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d$ng Xuqng cho h$ gdrn 2 vflt ?

3-M0t 6tO ed khdi tusng t500kg da4g chuy&n d$ng vdi v$n t& v 30q/s .Xde d{nh :

a/ES biem thi0n tfgng n#ng crea 6m &f nO Ui ngnn f$i v#n tde tr0m/s.

blT:fnh lge l1fiA e'ung blnh ,bi6t $nfisg du&reg mA 6t6 ehpy chgy &o,ug &&i gi@ hem l& n00ma

4-MOt v$t.c6 kh6i t*qrg 0;S kgduqc tle *i ft d0 eno z so v6i m& ddt -Ei6t eo n&ng c&a v6t trd

100J.ICy g:l0n# .Ctrqn gdc ttrd nf;ng tar m6t ddr

dTInIx d$ cao z.? .

bD(da di{rh d0 cao c&a v$t mA tat dd dg,ng rdrig e6p 3 nfu t}ld rrf,$g.?

5- Thd nAol& qu6 tirft dfurg nhiet ?Fhat Ul6u va vl6t hi6na tht}e eila dinh [u&r B6rLqy-Mari6t ?Ve dflng du&rg dene nhi€t e'ong h$ toa d0 (@V)

e N{0} he g&* m^a

"A *i=r*, :lte .ifu tdc eila r6t *, cd d0 [6m'v13nm/s vd ed ]anr&ng kh6ng d&i

e0a hP

7-eA0t dmnag m6y cO khdi luffmg.m:600kg chuy6m d@mg dr6ng d&ng n€n sm.h : 10mm (kh6mg cd ra-na s6t ) T{mh c&mg a&a =dgpg-co dB keo thamg m6yl8m m*rie Z rrqnmg fiiW .

a/Thaerg mrdy di [6n th6ng dtu,

h/ ThenE *dti -dlryn nqaqh de d&na vOi a = I nn/# Cho g : X0 m/s2 .

S-he0t thamh AB: ddllgrchdt c6 trqng ldd-ng F = I0 N v& AB = n&sm T'haruh AB ed thd quay

xunng quarnh tr trqc *&*nguogWe0 vdi CIA=30crn Edu Aa6treclvftr@mgFr=30N tsd

qu*ru oa* u&*g t* *6o *ul f+l riAu B moc v4t m$me ed rrqmg truo ras

ri€ng eua khfl [d t3 il T'lrn mhift d@ khf smu khi mung mdmg ?

nG &d0a hi drdp khdi nnrEng ms u dam6g cd vgm t& vs= 3 am/s ddu va cfiaErm v&o nm@r hi uhttry rf,mIa

3 ndn v&m t& hi rhdp "-T3m v&m ffi efia eda vi8mbi EErr v& ehsnna ?

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P*H Bf rsr rlec x{, u (z0rr-2012) - \Ar r,{' ro nrAuc cAo ,

cAu.r : (r cri6m),,.T,:i ptuole t,t*1*Xlill*'i;ffJ*iilr H6y suy ra vi chime mi,h r.ang

zipsudt cria ch6t khi ph[ rhuc.,;vio',r0t d6 ph6, tr]rkhi ?

CAU 2 :(1,5 ei63)

d0ng c6 ctQ lon brng

:|%hqTq lu'qn8 cfa xe vi coi nliu lgc c6n trlc &rrg vdo xe Hrong ;6i

a S1r n&.dei la gif Viiit cdng thric tinh chiAu d&i'cfra thanh sau khi bi nung n6ng *6u 16 t6n

nhau mi phf,i chlr.a m-6t khe h& nh6? -e - 'I o

MoJ thanh *v dyfg;iit dai 11

T gJ,hieJ q0 ?g' c Tinh xgm ptrf,i chrla rnQt klre h& rQng bao nhidtr mm t4

rc,;,a,a,il;d;';,i:;tTr1',?fl Hffl'';HxTttrs,itT;itr#:rf iffi Hlt*,ri"

.r"yj9t gglrgthric rinh m6men nglu lpc vd ch6 rhich 16.

b PhAt bi6u quy tic m6men

ray t) 1,1 t Thanh nnv rg pg ryuy-oiisil;irv" nam ngang o cach A 1,6m H6i

;li? flf;|#ffifftrd;aiL:T_tT,i*# tIc d,ng ,ao .tau uoi-priu,ror" n1;ilffi rir,a"e

cAuo:(1,5 di€m)MoJbinhkfnttr6tlch 0,4-nf ,ch*akhie zTocvi 1,5 atm Khim&nap binh 6p sudtkhi con I atn vinhiQt eO A O"C

chu{nli Do= lr2kgltrf: -i' ''urvrrlrYrtts'rrEuE' uu'f,ruIluul'ur(l' ,

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94U 7 ,(|,5 dicm; Tir m6t e,it nem t4iing cftms l6n c.ao m6J vflt 1500 g v6i vgn uic 6Au h

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c; van tdc cria v'at tdnE gd'p bdn .D v&n tdc crja v6t gi&nn bdn ldn"

C6u 2: Mdt vat dang drlng yan; fi,c clqrng vho vflt m.6t lgc F c6 gid di qua rfgng t6m c;a v8r rhi 'rAt d6 s6:

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C*ar 4: t{ai vflt cd cung khOi iuqng m, chuyCIn dQng vdi vqn t6c cd dq ldn h5ng nhau v1

: ri2 F.)6ng iugng cria hQ hai vpt s6 du-ry c tint-r theo bi6u thric ndo sau ddy ?

A co Eia tri dutOng

E, cd gia tri arr, "

p,chUatinhdUdcvichrJabidtchie.uddidudngcongd6

Cflu 6: Tai sao ci{i cd-l€ (dUng cu chuy0n dd m& 6c v{n b cdc bO phan cria xe) lai cri

phdn cdn dli?

Cf;u 7: NhQn x6t rrho sau dAy vd ng6u luc lh khOng chinh x6c ? :

a- Hq-p luc cria ngSY luc bang 0 vi hai lrlc d6 song song, ngrl-o c chidu cing d0 i6n

B NgAu luc lh h0 gdm hai lrrc song song, ng&oc Jni6u, cO Eo tO., bing nhiu, v) cirng

T'rang l14 - Md,eA tn; 102

I

C MomEn cfra ngdu luc tinh theo c6ng thrlc : M = F.d ( trongd6 d la c6nh tay dbnictia '

"n.I.ighu

ng5u h-tc,

Cflu 8: MQt v$t c6 kh6i luqqg m: 50g chuy6n dQng thang i16u;6i vfln t6c 50 cm/s thi

{}

dgrng luqng cta vflt cg d0 l6n la

a ZSOO kg.mis s 0,OZS kg.m/s C" 0,25 kg.m/s , D.2,5 kg.m/s

Ciu 9: Hai luc cira ngSu,luc c6 dQ lon F = 20N, khoing c6ch gifia hai gi6 ctra ngSu luc

rn6men cria ngSu luc lh:

A.M=0,6(Nm) E.M=600(Nm) a.M=6(Nm), D.NI=60(Nm).

Cfru tro: Chqn cAu ph6t bidu dring: C8n bire bdn lh loai cAn bing mh tai vi tri c6n baag

v0t c6 trong tem

I A thip nhAt so vdi cdcvi tri lxn eqn E cao nhdt so v1i cdcvi tri lAn cfln.

Cfiu ln: DQng luqmg cria vf,t b6o todn trong trucrng hqrp ndo sau ddy ?

ts V4t dang chuy€n dQng trdn d6u

"frrVg, Oi,rg rfr*f, O,an q0u tr6n mflt phpnenim ngang khOng m a sht

D Vat dang chuy€n dQng chflmddn d0u tr0n mptphlirg nim ngang kh6ng ma s6t

"Cau 12: MOt vdt dang drlng y6n thi chiu tdc dung cira luc c6 dQ lfu khdng ddi F lAni vfi,t

}<hdng ddi le 3F thi vQt d4t vfln tdc bao nhieu sau khi di hct do4n dilongls : '

c6tu tr3: MQt vAt g6n vao ddu N cria lo xo ddn hdi c6 dQ crfng k = 200 N/rn

dLfqc ddt tr6n mqt mdt ph&nE n5m ngang, ddu kia(ddu M) ctia Io xo cd

d!nh Chidu ddri td nhi6n cria ld xo b,ing 30 cm Chqn gdc thd ndnE tai vi tri

lai lA 25 crn; Thd nEng ddn ndi cria vat tai vi tri d6 la \

(J rQ

.-, b ,{L 4l

c" 250 J Cfiu x4: CO ndng cria vpt ld

B" mQt dai lugnE v6c td

,D.mQtdailuqngvohUdngc6fhd&m,dUdngho{ebing0

C&u ts: MQt ot6 c6 khdi lgng 1600kg dang ch4y v6i v{4 t6c 50km/h thi ng&di I6i nh)n

a va cham vho vdt cin E Jtrg trttdckhi t6i vflt ciin ' 'f,,

de lam gi?

m, dC tdng diQn tfch ch6n d5, tang dQ vffng vang cho cdn nhd.

Tiang?/4 - rraa O0 thi 102

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\ C d6 mua n6ng kh6ng ldm mpc m6ng nhd.

D dC hA ri6ng

Cffu 17: Dudi tric dgng cria mQt lpc kh6ng A6i bang 4 N, mQt vflt thu gia tdc vi chuy6n

dOng Trong thli gian Z s , dg Ui6n thi€n d0ng luq,ng cfia vQt ld

Cfiu 19: MOt dm vfunryd\e48N dugc b6c qua mQt bC nudc Trgng tdm ctntdnvdn circh

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bang

C6u 20: KOt lu6n nho ddi d.ay vd didii ki6n c6n b6ng cfia m6t vit rin chiu tdc dung ciia

A ba h,rc d6 ph6i ddng phing vi ddng quy

E ba luc d6 phii ddng quy

n hqpiuc cira hai hlJbet k)"ph6i cAn bang v6i luc rhrl ba.

CSu Ztr:: C6n dia ld m$t,img,dqng cfi,a s,

m" C0nE cfra trq:nE luc chi phg thuQc vi tri ddu vii cudi cfia quf dAo

cdu zs: Scyrr v! ndo sau d*y kh6ng phdi la dcyn v! ct}a c6ng sudt ?

cffu 24: KhAu sring d4i bScn{ng M : 0,5 tfrn dangdung ydn tr6n mat phdng nim ngang,

500rn/s(sov6id6t).B6quamas6t.V3rrt6cg.ifltliricriaifn8ld-A" 0,5 rrils B 1 m/s C.250 m/s B 1000 m/s

Cf,u 25: tr-uc nlo khidn cho cdchlnh tinh chuydn dQng quanh Mat Trdi?

Cfru26: Trong IoBi chuy6n dQng ndo thi vQt cb tlQng n6ng vd c10 lon <lQng lugng khOng r16i cdn vectcy ddng lyong ludn bi6n il6i theo thoi gian?

C" chuy6n dQng thhngUi€n OOi Oeu o chuy6n dQng roi tg do, ,r

cfrw2TzFlai chi em dirng mQt chi6c eay dc khiCng mQt bao"g4o c6 trgng luqng 1000N

\ Trang 3/4 - Ma dC tlii 102

c6u 28: MQt nguoi k6o mQt thtng 96 truEt th5ng clAu ti6n san nha nlm nq19

;iil"i ;,iv rrop uoipr'""ns ng#d goc io" u*i ngwdi d6 k6o diy tjins 150N

C6ng,cfia lwc ma sdt khi thirng truqt tfwgclQm la : - - I '

n._z,sgalB.-300bJ c.2.598J

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BE TEXI ErgC Kt 2 NANI X{QC 2013 - 2014 naOm vAr lI- L(FF to rEAroG cAo

gita bi6n dang co vdr sy n6 vi nhiOt crp v{t rfuy ? Dinh nghia su n0 dfl{ va vi6t c6ng thric ? Ciai

thfch tpi sao giiia 2 thanh ray d&ong sit nOi 1i6n nhau nguOi ta kh6ngtfit chring s6I nhau ?

ducrng? $hi ndo thi cdng,cria mQt lgc c6 c6ng 6m ?

lyc kdo thi c6n chri y eti6u gi nhu th(S ndo ?

Kdqvftnh6sao9hosOiddyhgpvdiphuongthAngdringmQtg6c600r6ittarng L y g:10

Em hdy n6i16

-d.q"e nflng, thiS nEng vi co ndng cria v4t nh6 bi6n dOi nhu th6 ndo khi

a VitSt bi6u thric iilrn e6"g lugng? Gqit6n vi dcrn vi cdcd4i tu-ong trong bi6u thric?

t6c 3m/s, sau {6 4s c6 vgn tdc 7m/s Tinh <tgng lugng cria vflt tirippgay sau d6 3s?

9?u,5j (1,5 eti6m) MQt qui d4n 1,8kg tlang biy tna"g dring len cao voi vfln tocz,+onls rhi n6 thenh hai minh , mirnh thir nh6t c6 khSi [ons

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b Dd ap sudt khi t[ng th6m l0% iryr"At U* dAu thi nhiet dO khf ti-Uao nhi6u ?

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chu6n H Do :1,2kglm3 .

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Trddng THPT Cdn Giu$c

MOn: vflt li - L{P l0 (Nfing cao)

Tht i gian: 45 phrit e$

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hfQng kh6ng d6ng t?, a6,

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tr/Qng kh6re oans r?,-Ia" ri" rii.,a ro i aav o?qrlir.o,ainr,

thrf nhdt

thf hai bay theo hudng nio vdi vfin tdc bao nhi0u? , :

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ch?m?

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c6ng vi c6ng su6't cria ngrldi d6?

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$ Oi,ntr luft bflo toan

90lq lu.One lir cd sd clia nguy€n tdc bhuydn dQng bing phin n/c cria tilntrta

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Cf,nSXng cria qui ci6 ta bdn d vi tri

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lyc ma s6t nghi

26 Thanh en aiing chdt, c6 trgng tuq.g-rboN, chiEu dii 2m cin bine nhu hinh vE

LUc F c6 d0 ldrn H

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