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lecture21 - TOPS PFflNT iNG College Station TX TOPS...

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Unformatted text preview: TOPS PFflNT iNG College Station . TX TOPS PRINTING College Station , TX UMM E uA O L'Pokr-HL CooathA'rL—Es) RA'DiAL ‘XTIZANSVEQS: coorap. Etifl: ”(1954- 77109) = x?- 3'4; +Qr~é§éj9 6‘1 m = (A- vrcg EA» n',TX TOPS PRINT'IIIfNG College Static O Ea mfg) +33 W DiSperyuj Cue/QM o/U] PPAVLTICLF WHEN JZCéH- 9C6) 61/5 NEH/3%; A KEGHVEN [email protected]:7flLc_- 0' O 5 8‘ 4 ° A o _':. 9 .3) = ”en—Jrflr-e-Wefi j6C7m3=ZL+.¢?s-MOL. "His Q) (~7M‘1': ”Q7“ Q4-" +£fTC70K-éfl'7sufi $19. = 44/5 ga— +[Q1m a.o9LmJ/S1§e_ -| u—A ‘b- -: 5,3 era-— im.ese!+gg 6e A Now REC—ALL 1-: Qangl, +M—efg W Lhcfrfifg —‘* .. h :0 “’ :: 6.9—4 Gem) f-kfaav'w 6L 33 I e6: “3'9“ng L‘éx—ca—oflefl’g _ en” Q Q 18> A , \I A . u—L - Cm, ‘ _ ‘4' g J; ea =‘MQHMSM3—q—emfiwgfi’g , EB”— —- (H ng5“ 9’4. Q3 ”J u—SI SUV?) 8 fréx— 5n— JLL-L‘tg— WfiWH—Q—Fmqu ‘U‘ ("7M3 ="fiE‘5’M C\%,e<zs-M3 ZWQHMQE + v+ . <9 <25 srsfimm. m M>t+mqwssn§j WW WW wmm m '2: «A ? .__:. A ,\ (Um—W4 = .4135 L‘-—- $55.5. \er = \IL—uasfi-Cfl-SS‘P —-__-_ \H. r . 5%} $579» fr/s 35:96 [4.071 $/5 ENEfiNEERmu C I - TOPS PRINTING College Station .TX 0 K33 ‘ , J / IF flit) ”-22 K A/COWSTAh/T‘ AND onmtr 61155) {5 cHflwe-srm WITH ”rm/1E 3382 ”1&3 BECUME‘? WITH/f”: A A (U05): ((1/7: 3611. WHERE A 1)}?— ECU _ 1 A . 0-0- &(fi) " ”QQJ €m+Rehéfi __> _:.~. A O ,{70;—L¥_(M) '/ 0 w Merry-Go- Round q“ A— View looking down C ' O O. Merry-Go- Round View looking down R = 14 ft 20 rpm constant rotational speed Boy starts at outer radius (t=OSec.) (in position shown) and walks towards center at a constant speed of 1.0 foot/ see. What is his velocity (mag & dir/ X axis ) in 7.0 see after he starts. What is his Acceleration (mag & dir/ X axis ) in 9.0 see after he starts. ,,> so 6 ‘ out) 1&0: xyfle-Ufigfi-Jré‘afiéfiiéU—e‘fi o O 0493ng == [0 —L€$3Q- 0°: ”791384. HE; H 957% assent/513+ 5] Es: g = wglq.<z%m3¢+mkxq.mmifié y L + O S l . #4 ”Ex/3: mPkE f (D /[email protected]”‘ 5"%%A«fimegoam/fim&xk. 60:) M M W 9W6 gel—94‘; '63 T: (:93 W/QJ—a. -.: W V. fig €“C033Q *‘M _- MECHANIK ffff ENGINEERING DETE {a m INF: , (U113)! +— 6; L193 IF 6‘ I: QW/ggbm W 6—Day: fltfi—fic fi—%\NC69C0>=© Czoy/ 9%): 63.2:— ”'9 O ' frag :- .{v—WGQ 6164 1:5)--.- fl‘; Ct.) .1. OLcmma —';..M (1:7 (2.432293% 5 fi— Lé} =- %\o [:7 Miazi-D ELM L173 +1M3CRt-31 ”4/ %0 WHEN t a as) 9" MLf/IM' ngfgv?! g: RECAg. .. -% /r%:~'9€%~w ' fl”: : \Ahgfifi—wy/S W217 :figrw/SJ g: V §=1Mki€ ‘é':@W/‘$ / W _ O I 0 am flrcfl=fi€n~ ”7/7939 / ”DZCJ'LQ“ /T(LC”LSj g” “i“ N<1fléL9~SU§a (:31. g (flirg‘e —'-3. 1334§91J5 M ..... ENG! NEERING TOPS PRINTING Col lege Station . TX I L. r" N W but) : (FF —r\* Léwuvé‘m .3. +£3$é+fi§3e9 c’iéw == fiflah (swam?) é: +0; (4.0949(1H cfie; Owns) =--- @H. 397) gm. + CWT/93 £9. $1 O o o 4“ @6357 =C5’1‘K39'7) §m+\§.fithfi ae— _>. ~_._ 5 Mew—Q“ (39, Mun—1:; O46} Okczg] —_-_ @233 73E“: em!) 2+ W mm!) 3‘] maw—thwws 410? 1397* 1;. V CH— U; " _ 1.,“ 0L:,GW'393 TOPS PRINTING College Station . TX 6 m?l%'w‘5)\+k~3%fl A M: 6“. 7045/3 9 = Hcflfie— ac“ = %9.I?-3H,s“’ % :: (11,020 V A V :: 6‘-'_70-1/:r\/$&'C [905° ' o w 6 0 Arm AB of the cam follower mechanism shown in is rotating at a constant angular speed of ‘ Q = 60 reV / min. A spring holds the pin P against the cam lobes. The equation that describes the shape of the cam lobes is r = 20 + 15 c030r where r is in millimeters. When = 75°, a. Determine the velocity components \kfand V of the pin 4 P. b: Determine the acceleration components afiLand aagf the pinP. r=20+15c059 Solution Since 2% rad/s il the-arm rotates at a constant angular rate (6.: 60 er/min ), the angular acaeleratian is zerb. Diffefiegtiating the; expression for the radial position of the p‘n Then at r.=20+15c059mm/‘ Ogl-éjgfi. —l_§g)sin 9 mm/s V 0. ) / \/ "léfig cos 9 mm/s2 W if N I! 75 , M ~ 23..882'29- m y (I) H .h H ~91.63636 mm/s "1 fl 2 2 -153.2665 mm/s2 V// Vr_: %;E —9l.0 mm/s L“ .............................. Ans. v9 zifé = 150.1 mm/s V .............................. Ans. 5-: 175. 5 gg?s,?’16 24° U/// I ar fi/E::é£éf_; "1096 mm/s2 V/ ......... . ............... IAns. a9’2\r9 + 2:9»:v-1144 mm/32 b/ .L ............... . ........ Ans; a=1581rgm152§ 58.78 L ...
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