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A composite bar of length L= L 1 + L 2 is made from a bar of material 1 and length L 1 attached to a bar of material 2 and length L 2 as shown in Fig. 21- 15. (a) show that effective coefficient of linear expansion α for this bar is given by α = (α 1 L 1 + α 2 L 2 )/L, (b) using steel and brass, design such a composite bar whose length is 52.4 cm and whose effective coefficient of linear expansion is 13 ×10 -6 /C°

A composite bar of length L= L1 + L2 is made from a bar of material  1 and length L1 attached to a bar of material 2 and length L2 as shown in  Fig. 21- 15. (a) show that effective coefficient of linear expansion α for this bar is given by α = (α1L1 + α2L2)/L, (b) using steel and brass, design such a composite bar whose length is 52.4 cm and whose effective coefficient of linear expansion is 13 ×10-6/C°

Grade:upto college level

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