Homework3 - Chapter 4, Problem 58 A rugby player runs with...

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Unformatted text preview: Chapter 4, Problem 58 A rugby player runs with the ball directly toward his opponent's goal, along the positive direction of an x axis. He can legally pass the ball to a teammate as long as the ball's velocity relative to the field does not have a positive x component. Suppose the player runs at speed 4.6 m/s relative to the field while he passes the ball with velocity gap relative to himself. If gap has magnitude 8.7 m/s, what is the smallest angle it can have (relative to the positive direction of the x axis) for the pass to be legal? Number 121.920066331136 Units ° (degrees) Significant digits are disabled; the tolerance is +/-2% A Field Pram Plastr; Frau/u: [29+ VPF E Value-l3 0F ‘Hu Flagé’r A J VB? RN“ C I‘da‘!‘ ‘ W h M VB; Vpp: ‘ Q5 Reid Fraw- 9 M4? 75,: 3 V‘C\O(‘l- a? ‘lluz. EA” ’ M +M¥8£Uzld i . VB? - Velocixy 0F ‘HLE loci” ln 4'le Plaza/0r: 4 APFlej Mu rultS Rf lifmlSCDFvi/lCL‘Ll-CV bdweew tankers, we Vl’ —> A “’ VBF = VPi: 4' VB? ._.> —> —’ TMS VB? = V5? _\/""7 .> J —- A VPF c VP; >< mid VBF— VBFj 2 /\ /\ :» VBP — *VPF} + VBF J Chapter 5, Problem 7 Page 1 of 1 I Chapter 5, Problem 7 1 While two forces act on it, a particle is to move at the constant velocity ; = (2.7 m/s): - (-5.0 m/s) One of the forces is F: 1 = (2.561549045 N); + (-6.08505358 N)’J‘.. What is the other force? Number -2.561549045 l 6.08505358j Units N L! ME TO Answer i1: Significant digits not applicable; exact number, no tolerance Answer i2: Significant digits not applicable; exact number, no tolerance WW)WWW»\\WMWV»¢A>>IM»x‘QVVK m:‘¢'fix<.\<awxfi¢uw~,1wzm¢4flMMRW/éfl/wa lav/mewtswswwm“mme i pm .4» w t i )WWWN9«N~¢XN vwn/xmmm “WWW Ch a,nge_,.\/..alu es Copyrigh‘; 2000-43964 by John Wéiey Sons. or All reserved. lF 4am ¥€rm£ ail +0 pmduce Wlawl’ \rC‘OClel\’/LUM MU; 0\C(€(‘€m‘Hdk mar lee zero Md Mats €144 :o ~—> —> "> J _> l:th : F, +15, : o «a F? - 'l’. http://edugen.wiley.com/edugen/shared/assignment/test/qpreview.uni?id=5699&operation=... 2/7/2005 Lnapter 3, rrooiem l l rage I OI l I Chapter 5, Problem 11 1 Figure 5-35 shows an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 96.6 N on the wall to which it is attached. The tensions in the shorter cords are T1 = 67.0 N, T2 = 47.9 N, and T3 = 7.2 N. What are the masses of (a) disk A, (b) disk B, (c) disk C, and (d) disk D? I“: $351332. Fra IOOAES AmarawS (a) Number 3.020408163 Units kg (b) Number 1.948979592 Units kg (c) Number 4.153061224 Units kg (d) Number 0.734693878 Units kg I 7716 rméscs aile MWM / 50 7th 19%” M each five 6069 dtaflm‘“ m__“5.+ 19‘? aims lvi magklludr’. (1) 54M erA MD: mbq ; T3 Q W : “T; 9.2 U D "’ : #:qu’ ii 7.23 “ l\ (a) mac TL: “lg lmcg :7 MC: 711?; Ana—12 % w Mm. Tl: Tfimbg ‘5 Wis" E53 iii-4M = Q : MEL ‘3 w 3 Chapter 5, Problem 24 In Fig. 5-39, a crate of mass m = 118 kg is pushed at constant speed up a frictionless ramp (9 = 29.0°) by a horizontal force What are the magnitudes of (a) F and (b) the farce on the crate from the ramp? Fig. 5-39 / Problem 24. i (a) Number 641.002987099445 Units N (b) Number 1322.174644088447 Units N Answeral: ‘ Answerbl: 7 " ' Droid- +U Rea bot/$3 diasmw, §5Mr€ b0 (A’ffihpaMuJ’I Eli‘s}. Fwy: RCOSe’ti/M? - ” —. W MHz-8’ '5 m ———-J-»~ = {—«w : iBzzN COS-6' Cos Zci" Nd‘kf‘. FA} 1:5 W itcirca apfliflo‘ L33 ‘HLQ Paw”) on m \oox. (ox F = FNSMQ= affix? = i: C NY new :5 3:: magpie: HKTCLK 4mm“: (AIM Chapter 5, Problem 27 A 37 kg girl and a 7.8 kg sled are on the frictionless ice of a frozen lake, 17 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 5.7 N force on the rope. What are the acceleration magnitudes of (a) the sled and (b) the girl? (c) How far from the girl's initial position do they meet? (a) Number 0.730769230769 Units m/sAz (b) Number 0.154054054054 Units m/sAz (c) Number 2.959821428571 Units m Answer 31: .Ti'G'P’f/Q'L’H 19:: :1? JJSEITIQ’ ,' CH; 11.1"“: 3:11. :3 ->,-"-.:”:) . —— ’ ” : (L1 {IS-Z (by 0C7 " \’/i/l‘(7 ' 5,?/3} 01‘) m a a: (a) 3&7 é" LE \ 1 ‘é/-—’ l) _———/‘2 Xe: EOGJL 1 ‘ \ VS 1 D ’ :aS/L 7:0 xfl) V "’0 \/‘ =0 We WOWL Afiknou) 410 50 WW” 4mg mm) or when >46: gs \ 2 I ' ’- A ’.. 7” W D W” my \ 1 ” 2'” :R/ 7&2: @05er t :D )2 t “was \laamgi le5~Z§l Chapter 5, Problem 40 In earlier days, horses pulled barges down canals in the manner shown in Fig. 5-44. Suppose the horse pulls on the rope with a force of 8800 N at an angle of i9 = 16° to the direction of motion of the barge, which is headed straight along the positive direction of an x axis. The mass of the barge is 9200 kg, and die magnitude of its acceleration is 0.13 m/sz. What are (a) the magnitude and (b) the direction of the force on the barge from the water? (Measure the direction clockwise from the direction of motion, and give your angle to U16 nearest degree.) Fig. 5-44 H 7 Problem 40. U} ‘ fl ‘7 X (a) Number 7657.430496268068 Units N (b) Number 161.532580063839 Unit's ° (degrees) Answer a1: Answer b1: :_ '" L + J w N X (U 3 __s /\ 2 '-) f— " " -- 2 X l U a 'r m E; a ’3 unapter D, rroolem DU rug: 1 m A I Chapter 5, Problem 50 1 Figure 5-53 shows a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless, frictionless pulley and back down to the man's hand. The combined mass of man and chair is 65.7 kg. With what force magnitude must the man pull on the rope if he is to rise (a) with a constant velocity and (b) with an upward acceleration of 1.30 m/sz? (Hint: A free-body diagram can really help.) Problem continues below. Fig. 5-53 Problem 50. If the rope on the right extends to the ground and is pulled by a co-worker, with what force magnitude must the co— worker pull for the man to rise (c) with a constant velocity and (d) with an upward acceleration of 1.30 m/sz? What is the magnitude of the force on the ceiling from the pulley system in (e) part a (f) part b, (9) part c, and (h) part d? (a) Number 321.93 Units N FHK b“ 0“) FR-fl back} 1CH€ book) (b) Number 364.635 Units N (A i [by (Ox gt (A i (a _, (c) Number 643.86 Units N (d) Number 729.27 Units N .r T A .l, T F (a) Number 643.86 Units N (f) Number 729.27 Units N wim 1’ “(T (9) Number 1287.72 Units N (3 1WM (h) Number 1458.54 Units N bilaptcl 3, 110016111 )‘f [456 1 U1 1 st—s I Chapter 5, Problem 54 I Figure 5-56 shows a box of mass m2 = 1.5 kg on a frictionless plane inclined at angle 9 = 30°. It is connected by a cord of negligible mass to a box of mass m1 = 3.2 kg on a horizontal frictionless surface. The pulley is frictionless and massless. (a) If the magnitude of the horizontal force fl" is 1.5 N, what is the tension in the connecting cord? (b) What is the largest value the magnitude of I? may have without the connecting cord becoming slack? Fig. 5-56 Problem 54. (a) Number 4525531915 Units N (b) Number 15.68 Units N LINK To ’_ '_ TEXT—IA Answer a1: significant digits are disabled; the tolerance is +/-2% Answer b1: significant digits are disabled; the tolerance is +/-2% FM{ \oofit) Free 106er (5‘) ?mm dwij (D CD @ _ _ = \ a J EJAC" Mia] F+T ‘T‘E T is ‘ AA a\: {l K 61 W_ “A ¥ - w— r"? ’_ Z wa d”fi”““ @a. ¥;M+ :hwism6-T’ =wzat ) K'f...,___.,i,..m_m1.- , , i. ,._ _ _ V M... “sum-.. «Mu-X % a1 : (“La g/VLQ» -T New“; l“" L: Hilfé’fi‘gfli 19¢ ‘2“? - 32.4.4.1 (9.! M Oi‘CES +62“ 6,) 5334:“ W 7/ g {43” if f ‘l (,1: :0 in”. C v..\..........»....-..-m.......u, Wu». - ..... push..-“ -- .».__«- »»4-' SO al‘r—Qz,’ PT waswtl'T > wz¥+wALT = MiW‘zfoMG‘mIT f : ‘ J le V“; A .. A T: mvngsme-le’ _, 1154.24.55 5va 30°; 1.545: «/53/\/ mill“; Hum, 09) [pl/Wm Ch = QSIHE‘, Hleu 4b.:xlcufilm WI” la! 2,—9FO => F=miq : miasw‘z? =3.z"?-8rsm363: 29th ...
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This note was uploaded on 04/18/2008 for the course 029 081 taught by Professor Kletzing during the Fall '06 term at University of Iowa.

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Homework3 - Chapter 4, Problem 58 A rugby player runs with...

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