Engineering
Physics
Thermal Expansion
Question

The figure shows a rectangular brass plate at 0°C in which there is cut a rectangular hole of dimensions indicated. If the temperature of the plate is raised to 150°C

  

x will increase and y will decrease

both x and y will increase    

x will decrease and y will increase

the changes in x and y depend on the dimension z

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Solution
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for isotropic material separation between two points vaires as

ℓ = ℓ0  (1 + αΔT)

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