ch12-p079 - 79. (a) Let d = 0.00600 m. In order to achieve...

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79. (a) Let d = 0.00600 m. In order to achieve the same final lengths, wires 1 and 3 must stretch an amount d more than wire 2 stretches: Δ L 1 = Δ L 3 = Δ L 2 + d . Combining this with Eq. 12-23 we obtain F 1 = F 3 = F 2 + dAE L
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