assn2 - 1.138J/2.062J/l8.376J, WAVE PROPAGATION Fall. 2006...

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Unformatted text preview: 1.138J/2.062J/l8.376J, WAVE PROPAGATION Fall. 2006 lIIT C. C. lIci Hornc~vork no. 2 Gi~rcn Scp 26,2006. Diic Oct,ohcr 5. 2006. In all exercises, please describe the physical meaning of your mathematical results. Use graphics if it can help the explanation. If you do any numerical computations, feel free to use Matlab. 1. Rcflcct,ion from a scrni-infinit,c rod. Consider t,llc lorlgitiidinal nravcs in a scmci- irlfirlit,c clast,ic rod of llrliforrn cross scct,ion. The crltl at rc; = 0 is st,rcss-ficc. Tllcrc is no cxt,crnal stress along t,hc rotl. The initial displaccrncnt arltl velocity arc : Find the dcflcctiorl in t,hc rotl for all tirrlc t > 0 by using the rrlct,llod of images 2. Read $1.Chapter one. Xot,cs. Consider an infinit,cly long st,ring taut ~vit,ll tcnsiorl T , m < .T < m frcc from any lat,cral slipport,. -4 conccnt,ratcd mass . \I is at,t,acllcd t,o t,hc string at t,llc origin. Sho\v first that Nc~vt,on's law for t,llc mass requires that a a ....
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assn2 - 1.138J/2.062J/l8.376J, WAVE PROPAGATION Fall. 2006...

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