79. (a) Let d= 0.00600 m. In order to achieve the same final lengths, wires 1 and 3 must stretch an amount dmore than wire 2 stretches: ΔL1= ΔL3= ΔL2+ d. Combining this with Eq. 12-23 we obtain F1= F3=F2+dAEL
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.