hw12_soln

hw12_soln - famnhér fag V#N#a gmrwé P lS‘él 13.61 A...

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Unformatted text preview: / famnhér fag: V #N#a gmrwé P lS‘él 13.61 A 6—lb collar can slide without friction on a vertical rod and is restifig in equilibrium on a spring. It is pushed down, compressing the 6 in, and released. Knowing that the spring constant is k = 15 lb/in., deter-j ’ mine (a) the maximum height h reached by the collar above its equilibrium] position, (in) the maximum velocity of the collar. 3 k = 15 lbfm, l. a f 0 2a 72 >2Lmy2 ’0 «’5 ~53”? , N , i may («mm 2 3m my”; _‘ z>ee€ahl J, 3 02g2) Cg§§0 QQM’WV; Er: ’t 2 g. (’62,) (flag) 3, 30792( Léy'ofl l 2; an ?/3*55 M memmflmm.w,«mw~w, 13.65 A spring is used to stop a 20041) package which is moving down a 20° incline. The spring has a constant lc = 125 lh/in. and ishaghy Cables so that it is initially compressed 6 in, Knowing that the velocity of the pack- age is 8 ft/s when it is 25 ft from the spring and neglecting friction, deter— mine the maximum additional deformation of the spring in bringing the pack— age to rest. ' 8 ft/s 6. «air §§« $i’afii’ Wréffanfl £3 Emil “a; 2 62” 3: 30c? Y gr 4—» -nmwaa 4» WW 3"“ T! " 2» (29.3 326: at" ... /9§.?£ tee-e.) fl) gwé 2/ LL wmf‘fflfitfi’fl gm“ (cm/lg?“ 03 r 9 ’1 l L g a , 5 f“ my?” I,ng “$53M “ ’ 7;, l. g: T) ’ lgh'lfl: Org“ “inwfiwgfl ) g; 321 20° (346' max” 2§+8maxlgfl zfzooxl 2‘ $2) $5? - vaé/gmjg; UM» ' l l . , i?) Jinx/g5" f%lxl’§m&\x iii "2; I ‘~ ...
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This note was uploaded on 03/22/2012 for the course CE 2460 taught by Professor Moorthy during the Fall '08 term at LSU.

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hw12_soln - famnhér fag V#N#a gmrwé P lS‘él 13.61 A...

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