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# dynamics2 - Test#1 DYNAMICS Name ‘ 1 The block weighs...

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Unformatted text preview: Test #1 DYNAMICS Name: ‘ 1) The block weighs ‘50 lbs and lame instant shown has a, Velocity of 20 ﬁ/s down the inclined surface. _ The “coefﬁoie‘nt of kinetic friction between the block and the inc-lined surface is 0.20. The drag forco .' FD 3 0.5V, Where FD is in pounds and V is in fds. Find: a) the expressioxi for the aooel‘eratioﬁbf the block, b) velocity of the block after 5 seconds, c)the distance the block moVes during the ﬁrst 5 seconds that thodra'g force is acting, d) the .tefminal velocity of the biosk. \$1,; I W V ' BOXIN YOUR ANSWERS Q v1“: e flﬁéié}? 0"“! ﬁll-“f: " NOMQVV ' . K ' v/ Warn: are, . WWW... wry x} ‘ 0:10 /5 .. bwelmzs. . - MA..- 62 c) s 9? 1"?) 9 F5695”; &} Tammi a}: 51191033140 “fin-30‘} 3 505m 25 “05v ’MN 3 h ‘ b) -2222024ILL/Mm QM 932% - . Ln lv<15.‘wme m + c. ":- 1322+ @M M :m-v fa]v~I51*/ﬁ5/5§1§’jﬂl.52928 2322(5) a W i («321% “591283 dx : C‘.322¥+_1.51L£Z33'+{B .. X“ name + * )Er‘iﬁiﬁ'léﬁﬂv?“ I3 MC? , -1, «1-322 MSZ‘I’Zm - 1m . x~ \$228.1 “Eff/21555???“’Wéﬁﬁgg . . a ‘ :23; H, .4, W. H w X13226.“ .5“._T‘”‘1£Eﬁl[}3/#~r:3) ~r ~ A) 060 ‘ - Q..— 2) An anti aircraft gun ﬁres a sheli at 500 m/s at an angle of 34°. At t m 0 a plane traveling at constant ' 15%: U [pr-,5 C 800 km/h pagses point as shown. Find: a) what time of ﬁring will the gun shellhitrthé plane, ' ' ' ‘ V b)‘how‘far is the plane from the gun emplacement when-if is hit; 0) Speed of the shel'i‘just beforé it hits the plane, (1) raéius of curvature of the shall at t =3 seconds. ' ' _. BOX IN YOUR ANSWERS w gxc” £5,356,331}:- *1,” '- [email protected] J-c-MKJ APO ‘ a7: ‘3 - ‘ , I "' 51:37&;-- vvi*iﬂ+f%&m3?.- Wgéﬁ +6: y: a 18111332-74566‘157L - x: tut/M7354- ;Ms xv)? mtjrlgmmMaw;- 1mi a; @“i-iqﬁirij' I .§,"%8 fﬁ2?23 *2 r ' ~rg“ ‘T‘ airy ru- d it r {9 F ‘ M 4‘ /; cw yr ﬂA’O , 3) Cat A is on a straight level highway traveling at a constant speed. Car B is exiting the highway at ‘ 50 mph and decreasing the speed at 2- ft/é’.‘ Car A is’being ﬁlmed at C. The camera at C must 7 (_ ' ‘ - rotate at the rate of 0.12 rad/s to follow the car. At the instant shown, Find: a) speed of the ear; b) the rate at which the angular velocity is changing, c)_the relative velocity of B with respect to A, cl) the relative acceleration of B with respect to A. H.533" j? “l . . 3,. I JILI- J _ 9' o 1 ' ‘j?’ j M”? ‘ gallrﬂrﬁ (ihfhiif ' BOX IN YOUR ANSWERS .I VF. i73£5sé=020 101‘ [Va/w ' ~ I f ,ﬂ‘mczgnmMM mm); _§____.&:ijaai'_.(1%?J 72/13". ,‘ V”; t 1535530 :7 ﬁmﬁf) : + Vii/r3:- - __ L7 “Bike; 70.76754 (VG/ﬂ)! PM “Izhjhwmz I r -‘ {D (IVER + 535/} (5—? *"ERJWYEQ +53% *a‘f/A .4; - t? (taggo‘gdmmzm 2mm 27mg. ,{zaawlr/siagg ..;_.:_...~.631,Ei/5,33% ,i5,?2"./_. ' w - a . 3 “4...--. 4) The IOO’kg block A is connected to a 25 kg block B by the pulley and cable arrangement shown. If the system is releaSed from rest, Find: a) the tension in the cable, ’0) the Velocity ofB after 3 seconds, 0) velocity of A after it has moved 1.2 in. ‘Box IN YOUR ANSWERS fat} c m}; " \$73-35? 5’1“? *7 M.‘ x - . ‘ [a3 2}; r I I if ...
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