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phys2a quiz5

# phys2a quiz5 - e the tear-off portion of the page for quiz...

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Unformatted text preview: ' e the tear-off portion of the page for quiz version (A,B,C, or D). Please mark this vetsion letter on your scant-m1 -: You must return the tear-off portion with the scantron form, but you can take the questionaire hozne. TIPLB CHOICE. Choose the one alternative that best completes the statement or answm the question. 1) A crane lifts ans-kg steel beam vertically upward a distance of 63 at. How mudt work does the crane do on the beam if the beam accelerates upward at 1.8 ml 52? Neglect frictional forces. 0 40L Wm? = AN; +595 = gm; + mgk=§moé11aoo1~ mfg; Rosana Nu“ m: = MM) : ammo: if A) 1.8x105] B)2.6x1051 0212:1051 ' D)3.1x105] 2) A u'avelerpunsonaslutcase suapatanartgle36°abovethehodmntalHéoolofwmkaredonebythe strapwhile movingﬁteaﬁtcaseahorizontaldistanceoflsm,whatisﬁtetensioninthesinp? Fcose (“9-) 7‘ (109 F: ?5|\) Y _ 07w {1 D)92N ‘ . O. 3) AsprhtgudthaspringoonstmtofMNlmEsUet-chedﬁom equﬂlbﬁumto29mI-Iowmuehworkisd bythepersonpullingthesz-inginthepromss? Adm/m we \$111M); ~— 6125: 'ﬂm9.QM——# A) 87] B)34] 067] D)134] 4) 4.00 x 10510th are done on a MIG-kg car while it accelerates from 10.0 ml: to some ﬁnal velocity. Find this ﬁnal velocity. -\!L1+Vpl= 2m: 1£%)at = mg) = 2% = ilg ‘.2 Q ,« \\] FFfL/k’) ’00 \‘. 1:. ‘14 ° )4-(IOL) A) 25.8 m/s 8) 28.4 ml 5 C) 20.6 ml 3 D) 23.2 m/s “m -m-m—- A-l tear off this section and return . Code number A 1m0.0-kgcarexpenmcesanetﬁomeof9500Nwhﬂe deoeleraﬂngfrom 30.0 m/sbo22.6 mls. How far does it travel while slowing down? / Nuar " jﬁiET‘Jx 3 AKG=m(V¥1-V1) c x:'_"£.-(V\$1,V.1 _o__._00 (3001-21? a, )= 20.4} \ 5 ’ “2:: ‘ ° 12 FM ° DEW”) ow 0““ ' / owmmzsm B)25m 018m D)20m 6) Amrneedslogenmte75.0hpinmdcrhomintahaconstantvelocityof155m/smaﬂatmadWhatis the magnitude of the tonal resistive fame acting on the car (due to friction, air resistance, etc)? Tb HNWIN (0W5T ‘ ’QG'LcC-tw ’, memw. : .- Fan “7 \3 J: 3 751]; (come‘gb 3:) -; 3,(9\¥103M Pal-«61' \VI \ aS‘VJS to ' M ’0 sb°5x103N B) 3.61x103N I cumxmm mum ( 7) Ablocksmaommtatmmpoiamumdpmmdmammgspmormzzemlm ﬁgidlyattadudtoﬂwplane.Iflheblock'slmss1347.0k3anditcompmésthespﬂngby620amﬁndﬁ1e distance the block navelledbdoreit encountered ﬁesprmgAssumeﬁ‘leplaneisﬁicﬁonless. 1‘- lbip/m BLOCK *9 FE OF 5mm: £2 ' m Awaﬁle' -'-Jz 13% mm» 40.(7’:6 mgolséhejr— {5*be boéb uor( a ‘BOSLUbe (C ”NV. AHJm w B)87m -_ ._ . C)165cm 1' " D)139.0cm ‘ . Gummc: ime- m bx mime“? ‘ O ‘ ' ‘ 8) Aparﬁdeupuimcesaforoegivenby =a- -3.ﬂx Findthepomﬂalﬁeldhparﬂdeisimmmethat themofpotenﬂal 'locatedatx-O.) 9f,- L‘ / Marv - 73.0152 = “5 (N- (3194* ='W*Ex +913 Resume ‘ H) 0 ' ° MAU(x)=a.x--;Lx4 a)A00<)=-asx2 QAU(x)=3px2 D)AU(x)=—ax+%e1 A—Z ...
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