# Answer on Mechanics | Relativity Question for atmiya

Question #66035

A sonometer wire having cross-sectional area 0.85 ´ 10-6 m2 is stretched between two rigid supports 1.2 m apart. A tension of 20 N is applied at its free end. If the temperature is reduced by 12°C, calculate the final tension in the wire. Take coefficient of linear expansion (a) and isothermal Young’s modulus (g) to be 1.5 ´ 10-5 K-1 and 2.0 ´ 1011 Nm-2, respectively.

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