ENGR 215 Exam 2 Solutions

ENGR 215 Exam 2 Solutions - % OLYMPIC COLLEGE ENCR&...

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Unformatted text preview: % OLYMPIC COLLEGE ENCR& 215 Spring, 2011 Exam 2 Name ' Closed Book, Closed Notes 8.5” X 11” sheet with notes both sides permitted A Calculator is permitted Show all work on these pages including 6 step method! Show direction on all velocities and accelerations. l. A block weighing 50 lb is shown on an inclined surface The block is released at the position shown at a rest condition. What is the maximum compression of the spring (lFlO lb/in)? The dynamic coefficient of friction is 0.3. Use energy methods. 25 pts I Geo. '~ F M ’5' Li? 3 arms I; I‘M?“ [if/EFL J" /\ ( if“ Jane E F i i :‘m‘ . A 7"," ‘. K} ._ s. (-3" {f 2 F “U N "s, iii-Jig“ r meg/«OE '9: + is; ifl‘afi j i "D 3m ‘3‘.' D“ W a” f ~ rpm; 40$ ma: :ma l3 ~ ‘ l -A—= J 1, I ‘7 _ ‘ ’_ to :‘> M : $500 i a s. / EN GR& 215 Spring, 2011 Exam 2 2. Member AB is rotating at a constant speed of 4 rad/s in a counterclockwise direction. What is the angular velocity of bar BC for the position shown in the dia am? What is the veloci of the slid t C? Wh t ' th eloci of oint D s / 9 gr ty era a is ev ty p 0504: 5M6”; f. at the center of bar BC? Bar BC is 3 ft in length. 5: C a VA? 25 points "—4) ——‘> g V :.gm(,4§;ji 095? l r i 9-; 6,354: Fwd DOB; ) VC D f mos ’ @444; in/\ hgewma: W: awe“: F: ./\ A J) “)7 VIE: \}A +03 X VIE/Ac n DVW): , \C _1_ €-" 2’0 r /4 v3 3 Z >-’ A ee» 9‘ lei-kt ’(A gem V3 A A Atvg we; ‘2 2» e a 53 e Va: Va T ‘ECX ri/g /\ VCCCDMQQ «L igméff} : ’8; + mack KkgrQlach‘SaO i+smfl4 /\ 1 ‘8)» 1L WM. 2 “8:27 “i” 3933 Wag? i— IDA?) Wm “*3 2‘ ~\/ Coed-ii” : Jar—@1025; We; COLL, Vc=i7fi AMA N C {3 Ma 0‘) a 4.4% MEL/A ’7 \f Sew: a: aerated“. , 8c fit [3 C A - n” I brows} 44m 492") a f T * J V : Dvg \JerA ‘5me :\ OJEC = Ail/irok. “'1 MM ‘ M \VC = vlzhiwzbd {an M 5:5 F)» "-3 "'Wfififi'gETM ‘" A F :13) :Vgg’ wBCKpD/B‘ A“ gfibzriofig+ézo§fl E D : -8} 4, 4 451: X l C(CO'XQ» #gW/Of) M’MNWMMW—ww m J) E § 3“ E; F17 13} it); 5 1% X , ; gHAAgG SFM 21* L79? 32: 23(57’ A 8”“ fi ‘3?" 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ENGR 215 Exam 2 Solutions - % OLYMPIC COLLEGE ENCR&amp;amp;...

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