Ex1_F01

# Ex1_F01 - Physics 220 — Exam#1 52111 This man mnaiata{if...

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Unformatted text preview: Physics 220 — Exam #1 52111.3th 13 2001 This man mnaiata {if 12 mﬂblem an T pagan. Please check that run have them all. All uf the funuulﬂ that yuu will [med are given balm. "Fun mayr 3.150 use a calculatm. sinﬁ'zyfr cmﬂzrfr tnnﬂ': ﬁn: r 3" _ .1 averagenpeed=ﬂLﬂmw g=E.Emfs“ l m11E= 1-6 km instth “admit-v = slope ul‘ pmitiou ‘mrﬁuﬁ time mutantanmua acmlﬁatinn = alnpe uf velocity mam time FBI mnatant acutelmtiuu: I = In + 11.]: + \$511?3 w = w. + at 1’: = t-'§+En{.:—z.;.] E = ruff Fm HEN {static frictiun] ppm = Gianni: HEN {sliding Irintiun} FI.. 1. A erate cf meae m. = 2.5 leg aite en the bed of a truck. The cu-elﬁcieut cf static ﬁ'icticn between the crate and the tree}: surface ie at” and the true]: and the crate are initiallyr at reﬁt. The driver then begins ttr drive away, mating with a muatant acceleratieu, but the la careful that the crate tie-m net ahde cut of the truck. If the acceleraticu is 1-5 raft“, what in the minimum 1while er .tt. t'cr which the crate will act slide? Aeaume that the aurfaee cf the trunk ie hcriacntal. {a} 1]. EE- Camj c13- W‘t , air 3"“? {d}1.5 FEFPVMI ﬂ {e} eeea ; ______-i., £1. -' La- lr g {l R : c. 4).! Bee/“5 at" H; 2. A. tenuia hall ia drcpped Frcm the tap cf the Purdue Bell teeter. It takes 2.3 a fer the hall Lc realm the ground. What is the height ef the tamer? Atacama that the initial velocity of the hall ia aerc1 and igncre air reeiatance. {a} 52 re I 1 {bleem j: D+m~frfjf {e} ELE- m {d} 120 m 0:14 “FOF'l’jif 3. Ten bleelta are connected by s masslesa string which runs ever at measlem Willey.r as ahewn in the ﬁgure. The eeefﬁtﬁent efltinetie frietien between the 5 kg bleak and the table is p; = 11.41]. Find the tenainn in the string. Iguere sir resistanee. t. A. baseball bf mam BLED kg wlnieh is initialljg.r at Mt is hit. by s baseball bet. If the bat and hell are in mutant fer a. time 11.1325 5 and the speed ef the hall just after it Ieem the bet is 51} 1:I:II.I'sr ﬁnd the average farce bf the bet en the bell- {agents {a at: “M 91.") z 45an [anew he”- 1 55 Islam :Im. EH 5'20 GM “FL-:- 5. A reek ie three-11 herieenteﬂy with eninitielepeed efﬂﬁ mfeelfehﬁdgewhieh ie'TE m eh-m‘e the river which rune heneeth it. Find the speed at the reel: iuet hefere it hite the water helew. Igem‘e the fame at at: rm'etenee. [hjﬁﬁmfs W: {e} 9.3 rule 1 ____ {d} 25m nfl: WE,» *L‘Lji‘cj 5'” Meme 5 :_ﬂ__19£,1e) M“:- 2 [\$9113 5 WW E. A. heeeheﬂ is hit with en initie] speed elf-=15 nefe et en engie et' 30" with respect tn the heﬁeeete]. Here fer ewe; from heme plate deee the bell lend? Fer eimplieity, meme that the hell eterte et geund level. Ignore eir rmietenee. FME‘ m” Fijf gartwﬂe 2:445- ﬂﬂ 1 1:?f: ______E—--_.- eﬂﬂtﬂ a D ' L-I‘FEEWJ'J K1: :knFFE-é _ Wigflgrl'W—‘E'Ji _ Efﬂ- " ‘13 4 ;, 37% i"- In dsﬁ we did sdelnonstrstion in which we “shot the monkey.” Which of the follow- ing ststelnents best describes the principle 1livhieh this demonstration was M9961 t0 illustrate? Ftir simplicity, essume that the force of air resistance is negligible. {s} For every foroe there is s resetion foree. [h] All objects feel the inﬂueeoe of grsvity. e 1I.u"elo::;ity is the sh Iy' of the position divided by the time- [dj All ehjeets tell st the some feter independent of their horizontal velocity. [ell Monkeys should not fall hen:- item. it- Consider s. person wearing spools] frictionless skis sliding down the ramp shown lJEllJ'I'i'. If the skies starts from rest, what is her speed 1when she tesehat the bottom of the rsmp'? Ignore sir resistance. El. Fm muwiﬂahm withaninitialspeedﬂfﬂﬂmfﬂatan 11.11513an ndthrmpect tn the harimntal. 'WhaL is the spud ﬁfth-E mmw whm: it ranches the paint uf maximum height on its trajectary? [gum air nesiatanca (a) EU ruler {1:} EEmfs f. r“ “ ignore air drag in this pmhlmu! [n 25D H [:41 {d} new [a] 130i] N 11. Ceneider ah-ml: which iaaIHpendelrl by We tablea- H 311mm helm. Find the tenaieu in the eableen the leit. Mame that the eahlm aremamleﬁ. [a] mm {mm 2,725muflg:m3 {d} :3th _ m : _______I-- : 20 7—“ L gnu-95’ 3" 4"“ xvi—“:- 12. A hall is thrm straight up into- the air 1with an initial apeed efﬂuﬁ mfa. Hem langie it in the air?I Assume that it et-arta at ground level, and that air reeiatanee ia negligible {a} 3J5 a {h} 0.23 5 {130.143 31:31:, “'“l: ‘L— ...
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