hw26_sol

hw26_sol - \ , *1 N533 3 i??? E E 17.”: 5 A B—kg...

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Unformatted text preview: \ , *1 N533 3 i??? E E 17.”: 5 A B—kg slender rod rotates in a vertical plane about a pivot at B. :A spn‘ng of constant k = 300 N/m and of unstretehed length 120 mm is at- gmched to the rod as shown. Knowing that in the position shown the rod has gm angular velocity of 4 rad/s Clockwise, determine the angudar velocity of the £er after it has rotated through (a) 90°, ([2) 180°. 3 i .I . M . -- f w‘ x.»‘ é; pf???" 9,5,, {EW a g a) 4 V a; g : at r if gig/4:; we g e ‘ Q} 4 2 \‘1 if m , ' u , CL " fl' '\ ‘5 5”“— A! 0&1 g" £3911 LEA); s“: emu”; ,J _ ‘ ' {f ‘4 \A 3,><*‘,?1€”,/><O*225;<83n5‘w v V : ~5¢ 52 sagas/x. eCN'WEE IN ' f7“; f1 50°93 b}, I 11?. 19 A 73—kg gymnast-is executing a Series of full‘Circle swings an AR horizontal bar. In the position shown he has a small and negligible eloclngse angular velocity and will maintain his body straight and rigid as he swms , downward. Assuming that during the swing the centroidal radius of gratis? ‘ of his body is 457 mm, determine his angular velocity and the force exerted on his hands after he has rotated through (a) 90“, (b) 180? (if) ‘52? {/w R .g . 51‘: (Q) M L/ ‘W‘? ’2: ¢ a g ; F}?qun 1"; If”) :3 b: ‘. a “1? 0'” , .fi fik/fiflfiééwfiwwaéagé‘jcf‘ z/ 1N) ngai‘lf ‘37.?21’ ant? 31122 A slender 6kg rod can rotate in about a pivot at B, A spring of constant k = 600 N/m and length of 225 mm is attach ed to the rod as shown. Knowing flat the m ( released from rest in the g t )M £32.. / “Tag; EMI‘JI‘CWQ, Z : a“) ., 0 — ¢ “2' H 0,22? 3 @330“ (9/ ‘” 0‘agf“-{-’ "” “ “ / ). ‘ ,K a on ~ f‘} :1 0"}2Lm u C, 3 ’09é2b0w‘g) (“2‘5 7- v 2 fngi <22 fl 2““, 0°53 " 2 ‘ r? a» 5W 3 : "-1... “fig {épét‘gf’m 3 mm" F2» 2.. "’ m (x ) v a j 3» [25“ Buy ’3 O ‘ ‘ UL”, . *q‘ fN'mJ 352mm,” > [:7 H1 '* +6V9‘g’y‘ (a I; \b L [€11 (I H‘Ji :VNL/flézméfl/ '/ T) in)» 3 /(.83‘ (/’\'m :j ,1 2~> _ 3‘gg;,:; w; “7/ \ £59 "92” ‘ "<7 ,ij’g 9‘ “’ 3. ’ 3’ g3”? 77 “IL Ufa? “i in; ‘ 13’ giggiiol? u TMM“”” , J 3 f’ “ é ...
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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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hw26_sol - \ , *1 N533 3 i??? E E 17.”: 5 A B—kg...

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