490_Physics ProblemsTechnical Physics

490_Physics ProblemsTechnical Physics - 492 Wave Motion v=...

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492 Wave Motion P16.62 (a) v k x == = ω 15 0 300 500 . . . m s in positive -direction (b) vx 15 0 . . . m s in negative -direction (c) 15 0 200 750 . . . m s in negative -direction (d) 12 0 24 0 1 2 . . m s in positive -direction P16.63 Young’s modulus for the wire may be written as Y T A L L = , where T is the tension maintained in the wire and L is the elongation produced by this tension. Also, the mass density of the wire may be expressed as ρ µ = A . The speed of transverse waves in the wire is then v T Y T A A L L === µρ ch and the strain in the wire is L L v Y = 2 . If the wire is aluminum and v = 100 m s, the strain is L L = × × 270 10 100 700 10 386 10 3 2 10 4 . . . kg m m s Nm 3 2 ej bg . *P16.64 (a) Consider a short section of chain at the top of the loop. A free-
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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