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 $2 \times 10^{11} N m^{- 2}$ and coefficient of thermal expansion is $1.1 \times 10^{- 5} K^{- 1}$ )

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 \times 10^{11} N m^{- 2}

and coefficient of thermal expansion is

1.1 \times 10^{- 5} K^{- 1}

)

Aicharya · Accepted Answer

Young's modulus, Y = F A L &#916; L &#8756; F A = Y &#916; L L = Y &#945; &#916; T &#8756; P = 2 &#215;&#8203; 10 11 &#215; 1 .1 &#215; 10 - 5 &#215; 10 2 &#8756; &#160; P = 2 . 2 &#215; 10 8 &#160; Pa

The pressure that has to be applied to the ends of a steel wire of length 10   cm to keep its length…

Solution

The pressure that has to be applied to the ends of a steel wire of length 10 &#160; cm to keep its length…

Solution

The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length…