Practice Exam_2_Solutions - AEM 264-002/003 Dynamics —~...

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Unformatted text preview: AEM 264-002/003 Dynamics —~ Test #1 Spring 2007 Instructions: 0 Closed book, closed notes test, one 81/2 inch by 11 inch sheet of handwritten formulas allowed, with no worked example problems. You must turn in your formula sheet with your test. 0 90 minute time limit — strictly enforced. 0 Show all of your work. 1. A projectile is launched from a height of 1000 feet at an angle of 20 degrees below the horizontal as shown. 6=-20 degrees The launch velocity is 50 mph. V - o How long does it take the projectile to travel 0 from A to B? 1000ft o What is the horizontal distance from A to B? o What are the proj ectile’s velocity (vector) and speed (scalar) on impact at B? 2. A car leaves the highway at point A and travels at a B constant speed of 62 ft/s from point A to point B along a curve of radius rc=3 00 ft. The truck remains on the highway and has a speed of 70 fi/sec at point C. The truck slows at a constant rate and reaches point D at the same time that the car reaches point B. Points B and D are at the same Y position. o How long does it take the car to travel from A D to B? o What is the velocity of the truck at point D? o What is the velocity of the car at point B with ; respect to the truck at point D? o What is the acceleration of the car at point B with respect to the truck at point D? C 3. Two masses A and B are arranged with pulleys as shown on the left. Mass A has an initial velocity (t=OS) to the left of 1.2 m/s. Mass B has a constant acceleration of 0.4 m/s2 down. 0 What are the velocities of the blocks after 3 seconds? 0 How far has block B traveled from t=0s to t=3s? Gnrcm a? 5/“ch : f e = 90" _ _ 7 “fl -Vo=3390>< 6’0 & 37511259: A 3éoo E W , \ _ B A: — w Rssmhm - NmL > ‘ Egg ‘ 11%,)”ng :1)” {1' Hams B [QPES The. dISbmJ—L £0me ‘1 1?) E .3. Efljwhm _ 3:0: ~QQ} HA1“ 2 UV’J/ \ U 3 v ‘— 32,2 {: ‘3? ‘Q = 603 ZQO ’731/3S)AZOO_32'21: _ ' , I ‘_'i N 1 (Q AX= 73U360520t @ ASLZ—W3’33m209t 233.;zt_ ~ ' 5%: W -- o—moo 2 «moo BULK. Q) iwtz + 2§.08t _1000 = o I t= 7g13)~ XV K i L, ta ii M Q) AX; H92 Ft 5% . C 2 ._ ,. I 9 _,é. @243; .3115 J— W 72 (92.91: 45:; fir]; ‘- thzSLewL w WA 3 6297/5 dingbud’ [so flk;o) » W C (£44144 D MSWJFIJW R rm53)0f§vez7gft ems Shaw, 5%,; flair? ‘LLQQLOALEW fist &~p windy/r128 C oft m0 (:6. @ 3005;;q50: Vofihfiqgtl @ at B VF} (ogEflsL-smwsi;+ my?) m I, Fat), ‘14 .. I \/L Q) 3ooxj; GR ’5 t_: 3.%s) H Q 300 3.5%” a ’70 ($487 + Jzac (S‘s/)2 =7 ac: {7.469— 52 ’1 \lmss {QQC'Si‘n‘fl/UL 4Co$“(§0§>-LH.(,§:}; A- 3%: :5}: £13115“: *s‘wfg) *" (473493) 0, R... ,2"! t " - héffi—L 3 &_ _+> _ Flop ° Ua‘ocflnhfsrqg' A 9) B ' __ 3S _ -4; __ v M 0. £414» JR Mmeéfim o 123;. ‘ F1st as“: I)“ 41%” ’K“WV_(__ ‘ .,. __ ' 9,2. J _ flaw/mm: _ L _ 2><b+ 338’ +1; :7___-1)% * a W‘Wfl— mm (is: ,A we: (we ~o,c{ =7ng 01 t: .23 $ HMO”): 13193 = Ooqtz’o,8t ‘57 ~05! z ban» 025 H 3 9 __ h V F __ ___ v _ %>F;HtZ—o.9tf -___0»§,o~(—0«9) ma; ' Z 2 ...
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This note was uploaded on 09/26/2008 for the course ME 215 taught by Professor Mcinerny during the Fall '08 term at University of Alabama at Birmingham.

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Practice Exam_2_Solutions - AEM 264-002/003 Dynamics —~...

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