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Two uniform bars of length L1 and L2 with the coefficient of linear expansion α1 and α2 are joined to form a longer rod of length L1 + L2 . The effective coefficient of linear expansion of the composite bar is

shlok jain , 12 Years ago
Grade 12th Pass
anser 1 Answers
Shivam Dimri

Last Activity: 12 Years ago

delta l1 = l1 * a1 * deltatheta

similarylfor other one

combining both we get

alpha effective  = ((alpa1 * l1  + alpha 2 * l2 ))/(l1+l2)

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