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Bulk Modulus

When a metal ...

Question

When a metal rod is heated and then prevented from contracting as it cools, a considerable force is exerted at the ends of the rod, this can be found using

A

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B

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C

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D

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Solution

The correct option is B

When the rod contracts a compressive stress acts on it. So using Young's modulus of the material it is possible to find the force that it experiences on contracting.

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Similar questions

Q. A thin rod of negligible mass, length

0.5 m

and area of cross-section

4 \times 10^{- 6} m^{2}

, suspended vertically from one end. The rod is cooled down and it can contract by

5 \times 10^{- 4} m

but prevented from contracting by attaching a mass at the lower end. Choose the correct option(s).
(Given: Take young's modulus of rod

Y = 10^{11} {N/m}^{2}, g = 10 {m/s}^{2})

Q. A thin rod of negligible mass and cross-sectional area 4x10

^{- 6} m^{2}

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^{o}

C. The rod is cooled to 0

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C .Young's modulus

=

^{11}

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0.5 m

and area of cross-section

4 \times 10^{- 6} m^{2}

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5 \times 10^{- 4} m

but prevented from contracting by attaching a mass at the lower end. Choose the correct option(s).
(Given: Take young's modulus of rod

Y = 10^{11} {N/m}^{2}, g = 10 {m/s}^{2})

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Q. Assertion (A): The pendulum clock made up of a metal losses time at high temperature
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