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Statement of a problem â„– 10628

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Two rods are identical in all respects except one: one rod is made from aluminum and the other from tungsten. The rods are joined end to end, in order to make a single rod that is twice as long as either the aluminum or tungsten rod. What is the effective value of Young s modulus for this composite rod? That is, what value YComposite of Young s modulus should be used in Equation 10.17 when applied to the composite rod? Note that the change ∆LComposite in the length of the composite rod is the sum of the changes in length of the aluminum and tungsten rods.




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