hw17_soln

hw17_soln - i C E2636 O 50:54” W er be iii/dim Saaerfat z...

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Unformatted text preview: i C E2636 O 50:54”; W; er be? iii/dim Saaerfat ' z a 95' E \{lCl/QV‘WCg/Jjfl fly‘?c:ifl/L i W 1 3 ’” ’ _ 1 % 14.39 and 14.40 In a game of pool, ball A is moving with a V61 ;_ VG of magnitude 170 = 15 ft/s when it strikes balls B and C, which are at r1 and aligned as shown. Knowing that after the collision the three balls m: in the directions indicated and assuming frictionless surfaces and perfw elastic impact (that is, conservation of energy), determine the magnimdes the velocities v , v3, and vc. ' , “a ’\. rod, N4” g; “I g (y :[§(ng¢§(fi +§n4ggjizmyg A ‘ \l j 7 “:1 , I; ("1... E E 5‘ r» {’3' : 7 "I 3:? ’ 5;“? 'i ’ i ,mw} «i we “5;?! 6. g"“ i f {I ,3 } -/’ fl "I ‘ if N. 4 5: 1 in w a» 8 4v w. ,2 g 6 r 15' I . 6 i; j I 3%” ,I / g3: [ C03 69 2’ %" V3 ’3 j v k/f/ v a i "'4 fi/ flu/07¢ fl {gm ‘3 j; . +11 (2‘ :2 0x we it n} 5:, {2/ V F ‘e‘ i 4*” r ‘ - 3" I i , a ix ( x WWW/6o i P/AMS’ / “$4.46 Four small disk , , , slide freely on a frictionless, horizontal sulface. Disks 8, C, and D are connected by light rods and are at rest in the position shown when disk B is struck squarely by disk A which is 1110\ng to the right with a velocity v0 = (12 m/s)i. The masses of the disks are = mc = 75 kg, and mD = 15 kg. Knowing that the velocities of the L after the impact are VA = 0, v3 = (3.5 m/s)i, vc = uCi, and e speeds cc and DD, ’ ‘ ’ dissipated during the collision.’ WA : 7713 disks immediately : oDi, determine (a) th "1) e system which is kinetic energy of th 5 {/1 I J”, r i g as n (,2, ; gag i: ow mo g: e rm sag ‘73 i" f r A ; la“; 1%.? :1 m g/ffl“£ } j U mi) 55: f fl ‘1‘,” 3’ A f! l ‘ K "l 2 W? a g ,2 {J‘s/’64 9;; a r m ’y J I Y; \ iig" 5/ I 2", pagy‘gxwffl/i (3%M§?%<W%ge gyfiwfi iii 3* i gt W 5% ll; : 3‘5 Vii/g up VD’=/«7rmg§l r ‘ 5 1 W E 1:) @Efiégé/g W "‘2: Ow“? {Time was} Jé’ I .. f“ x. : q» 5 Xe ~ 5! ‘ 1 f m m Hni'i/ijw’lfl é !§ a» 1‘ n A “5;? ¢ > I J/M M F) m‘ /‘r mm’vfififia 5 x/ 5‘ y {'7‘ g gay: ‘5’ ' In a game of billiards, ball A is given an initial velocity V0 along f the table. it hits bail B and then bail C, which are longitudinal axis 0 . r at rest. Balls A and C are observed to hit the sides of the table squarely respectively, and ball B is observeci to hit th = 4 m/s, DA = 192 m/s and a = .65 in, determine (a) the veiOCities VB and V3 of bails B and C, (b) the point C ' Where bail C hits the Side of the table. Assume frictioniess surfaces and perfectly elastic ‘ hat is, conservation of energy). the boil at A“ and C ’, 3’, Knowing that 130 5 {a (5A “(<2 6*) o a A m1 a, fiwflw mam (I 1*. AA. ‘\ E f I wmw ;« W d, f; ; #0590“ ) I”; A Eff/153,! :27};- {iél‘ Cs w l , ’\ I .. Ln « flmwr a N4“? cwmmmumw-m u wwvww>mw-' ¢ «r . mm» «mmww». umm-w W n my .vwwwww A... ..; ,wm, mm, A. My, .,, ~W,,w..(“,,,.m. , ,. w, ,m. mm.“ A, N , ,A w ., , , ¢ w ‘ H ‘. , Emmi (0AaNe‘f Rafi/4’, HIV/owl?) "' 9%er «QM/€23 wflummwfl (fix/en” al/Cm0737Lf~ a ~~ 3M}? {We 142” 41> wfmi ’ P! S e 5‘. N ngf? ,( em up (4,; : OPE/“Ml; +05; + 0H " firmfvoulsaw mmew‘ OEUOI/w Wa/ Jymfaok (Mafia/v” wfikM W . U6 mmmmffimfm% TM: c my g MA “4 49 W" A, 20 + “/ 0’3 flax/53W 142(Lmuwm/xm , :- , CWSQYV’Mfm #NH is ajmfl H4", 5 ...
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hw17_soln - i C E2636 O 50:54” W er be iii/dim Saaerfat z...

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