Solution #4 spring 2007

Solution #4 spring 2007 - Physics 2211 Quiz #4 Form #411...

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Unformatted text preview: Physics 2211 Quiz #4 Form #411 mm... ifuil'im Spring 290? Version A I Print your name. test form number {3 digits at the top of this form). and student number [9 dig-it, Georgia Tech ID: number} in the section of the answer card labeled “Student Identification." 1: Bubble the Tea! Form Number in columns 1—3. skip oolumn 4. then bubble your Student Number in columns 5—]3_ e flee-response questions are numbered l—lIl. For each, make no marks and leave no space on your card. Show all your work clearly. including all steps and logic. Box your anti-Fer. I Multiple-choice quefitions are numbered 1-5. For each. SEIECI the answer most nearly oorrectI circle this anewer on your test. and bubble it on your answer card. Do not put any extra marl-:5 on the card. I Turn in your test and simmer card as you leave. Your score will he posted under ‘Course Standing” when it has been graded. Quiz grades become final when the next quiz is given. a You may use a calculator that cannot store letters. but no other aids. 9mm = 9.8mm: Unless otherwise directed. all Springs and cords are ideal. and drag should be neglected. I. {16 points} A small bomb of mass m is thrmvn vertically upward. When it reaches its maximum height. it explodes into three parts. Immediately after the explosion. one part. with mass me. has a velocity of +2001? + 2flfljmfs. A second part. with mass mffi. has a velocity of +4UU‘E — lflfljmfs. 'What is the volocity of the third part? [On Earth.) An} Pfflk: ‘3 rqui‘i‘fl‘i'tfiinfil fiw‘e {I has ¢§HP¢er +0 «Q'ch o'l: afiPloflh‘t -' Limiter mlweufih :2: MEer-Ve cl. 4+ P {ad‘- I in only 1:! Minna. firillf 5+ip Pad!" m; men-Fun fl i‘E-ffi. i5;=i" ‘3 F" Pfx= Pig -—e (3}: mm... emu-H... fimlv3£¥ Vang: _ mlvl'tx' - mlvlflx 1. '— —e “‘3 “it — 'gfl‘? Mfr Pia: Pg: —--‘! a :- “.9143. l-“I'vaqtu *“Jl’aey v - emf: - mm, - ("J’JJHWHH '(“3‘) FW“) i: M3 = "if: I“; A. Fbrrn ##11 Page 1 of5 Ii. [16 points] An amusement park ride {the spinning terror] eonsists in a large verticai drum of radius R1 which spins so fast that everyone inside it stays pinned against the wall when the floor drops away. [This has not yet oeeurrerl in the illustration.) The drum is spinning with angular velocity or. a person of mass m is pinned against the wailr and the coefficient of static friction between the person and the wall is #5. In terms of an}.r or all of R, to, mi1 its, and physical or mathematical constants1 what is the magnitude of the foree that the psi-son exerts on the waii'? {On Earth.) [year'in +9 E‘finof *‘ N 4?; - W:- the W flan N: Mgr: Hut: “tth E N= FIth I Fir-1M _ "i" +5; 7%) i guinea l = iéi‘ kiwi1h ptfifl perin- Fran Nansen-is 319i...» Fan's- - "' per-En 1'7'7 [gar-i 5 (Flufde Fe rSflI draw P1- r3!!! d nil-ran. so 4 I. 'I- 1 inorfluizv-fi 1"” = [m3P-i-(WHF) Jean 1. [fi points] In the problem above, consider a person in the drum who is momentarin at the extreme left of the illustration. at the position marked with an asterisk {is}. At that moment. what is the direction of the force that the person exefls on the wali? [On Earth} [a [b] i ireetion ii. F'er I; we“ ch P‘r-‘W 31; “an ref-.1 {e} Direction iii. 3 i y {d} Direction :1. H. (e) Direction in. FHH 3" Lew} £0111: d1 wqfl' '3' lppmi'lif. Form #411 Page 2 of 5 I I I . [113 points} Two 1.0 kg blocks are onnnected by Hope 1~ as illustrated. Hope 2 hangs beneath the lower block. Each rope has a mass of 25113. That is1 the ropes are NOT ideal! The entire assembi}r is aooeierated upward at Mimi’s: by the force F applied to the top block. What is the tension at the top of Hope 1? {On Earth.) "The +0? in!“ rape '- mutt“ allelii’rfl‘fit refit 1, Huh 3.. em! rage I up Hflflrt (lfl‘r-Jfl' yes... is one ohfi'fit. Ami, Mom 21" Lw no; flfiflm-wnex T] e MexitW-‘r next-M3 fill w = 2. [6 points) How does the tension at the bottom of Rope 1 compare to that at. the top of Hope 1'? {a} The relationship between the tensions at the top and bottom of Hope 1 cannot be determined with the information provided. E91!“ anvil; for: {b} Tension at the bottom of Hope 1 is the same as that at the top. "us. *4“? gm." Tension at the bottom of Hope 1 is ess t : that at t e op. {d} ension at the bottom of Hope 1 is greater t . n t at at the top. qgfpl'l‘fl‘i'l'fil‘ Form #411 Page 3 of 5 3. (it: points.) Twu hint-ks en a level frictionless table are that pushed from the left by e. eenstant horizontal force of magnitude F, starting at rest. Next, the same two blocks are pushed from the right by a horizontal force nf identical magnitude F, starting again at rest. if m1 :3 m2. hnw times the eentaet furee magnitude between the blacks when pushed frem the right estimate to that when the:-r are pushed from the left? fa] The eenLaet feree magnitude is the same when pushed from the right as when pushed from the left. {hi The contact force magnitude is. reater when pushed fmrn t e right than when pushed from the left. {e} The contact force magnitude is less when pushed from the right Lhan when pushed from the left. Wilt»; Fagin“; *pfam +l‘u? it'lf'i'if +h¢ :wflrl‘ ‘Fvfle (dime) Muesli" «(rein-wit 441:. if??? “#35, H1. WHEN ?niiflei ‘Ff'm HM: rigid". Hue rm i-ecl" FIT“: {waffle} hiqu excels-(.41: like first:an Mafia. M" The Gisele-refill»! Mgflhfl-“Jrfi hurl- $39 “up. Same; as. {he 3'16! Mfijwff‘tf‘if ampbe an! HI! hhf mu: m fie 54mg. 4. {ll} points} Bill and Susan are each standing an identical skateboards [with excellent hall hearings], initially at rest on level ground. Bill weighs. Lin-ee times as much as Susan. He pushes herhaunted).r on Susan's heek. raufiing her to start. moving away from him. In‘in‘iediatel}r efLei- Bill steps pushing, and in the reference. frnnle ef the Earth. away,r from each other. and Susan‘s speed is nne—third that of Bill. usan s spee is t tee times that of Bill. [a] Susan and Hill are IIlEiI't-‘ill [h] Susan ant ill are moving sit-tag.r frein eae ether1 [ei usen is lt‘lU'r'lllg away from Bill, and Ht] is stat-inner}: [r1] Susan and Bill are moving awn},r From eaeh other at Equal speeds. NI? not ash-rad form! 9M Breasts... Jya+rm. iii-am M “neuter-i III we fear we J_ Perm #dll Page -t of 5 5_ [11] points] Two halls, of difierent known masses m1 and mg. are at rest in a tube with a reassiess compressed spring between them. When the spring is released. the hal] with mass m1 flies out of the tube with a meaSured speed V1. The spring is unusual1 in that it does not obeg.r Hooke’s Law, F = —Ftfls. Instead, it exerts a force F = 4:513“, where n is an odd integer. If the speed of the bali with mass mg is to he calculated. what information about the spring is required? {a} The value of ii. is needed. {b} The time for which the 5. ring acts is needed. Beg-3m; [c] No information about the srin is needed. [d] rI‘he total force applied by the Spring is needed. E [Ei The impulse provided by the spring is needed. Ghoul» {yd-rm 0? Led. toil: emf Hie mg I EH5, The“ fire at 159+ “hr”! "ff-8i on i'i'. {Mm mar-Icahn“ v.5 (misread. No Ihfirngfih ‘Lfiut ih'i'rrmf 1'21"“: {I radii-red. E. [it] points) Three cars, car X . car Y, and car 3, begin accelerating from rest. at the same time. Car X is more massive than car Y. which is more massive than ear 3-. The net force exerted on each car is identical. After lfls~ which car, if any, has the greatest momentum magnitude? is.) rCar 2' has the greatest momentum magnitude. [b] Car Y has the greatest momentum Ina itudo. All three cars have the same momentum magnitude. {:1} Car X has t e greatest momentum mag-mtu e. .a-'--i D u...- Shno her-re fl’ ofipiu'i 4e and. car 451- Some 415‘; In Some ii-rpul-W i? egphr'j‘l‘fi firth flair. Emir (or he! Seine morn-redone «always. Ali Ur}h .5qu (1FHP) r0 {Mylfl Mime-‘5‘“. Form #411 Page 5 of 5 ...
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Solution #4 spring 2007 - Physics 2211 Quiz #4 Form #411...

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