NCERT Exercise 10.9 - Thermal Properties of Matter
Question: A brass wire (1.8 m at 27 C, diameter 2.0 mm) is cooled to -39 C between rigid supports. Find tension. alpha = 2.0 x 10^-5 K^-1, Y = 0.91 x 10^11 Pa.
Answer: Tension = **about 377 N**.
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