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A composite bar of length L = L A + L B is made from a bar of metal A and length L A attached to a bar of metal B and length L B . Show that effective coefficient of linear expansion for this bar is given by = [ A L A + B L B ] / L


A composite bar of length L = LA+ LB is made from a bar of metal A and length LA attached to a bar of metal B and length LB. Show that effective coefficient of linear expansion  for this bar is given by
                          = [ALA+BLB] / L


Grade:10

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