The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C is: (For steel Young's modulus is 2 × 10^11 N m^–2…

Question

The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C is: (For steel Young's modulus is 2 × 10^11 N m^–2 and coefficient of thermal expansion is 1.1 × 10^–5 K^–1)

Accepted Answer

Correct answer: A. (a) P = Y P = YαΔθ = 2 × 1011 × 1.1 × 10–5 × 100 = 2.2 × 108 Pa

$The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C is: (For steel Young's modulus is 2 \times 1 0^{11} N m^{-2} and coefficient of thermal expansion is 1.1 \times 1 0^{-5} K^{-1})$

Solution

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