Thermal expansion of an aluminum bar

AI Thread Summary
The discussion focuses on the thermal expansion of a 10 cm x ½ m x 20 m aluminum bar when its temperature increases from 10° C to 20° C. The relevant formula for calculating the change in length due to thermal expansion is ΔL = αL0ΔT, with α given as 24 x 10^-6. Participants confirm that thermal expansion occurs in all dimensions, meaning each dimension of the bar—length, width, and height—will increase. The conversation emphasizes the uniform expansion of materials with temperature changes. Understanding these principles is essential for accurately determining the new dimensions of the aluminum bar.
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Homework Statement


Consider a bar of aluminum which is 10 cm X ½ m X 20 m. If the bar undergoes a change in its temperature from 10° C to 20° C, determine the new dimensions of the bar.


Homework Equations


ΔL=αL0ΔT
α=24x10-6

The Attempt at a Solution


I understand how the formula works and everything. But my real question is as follows: does thermal expansion occur in all dimensions? Would each dimension increase?
 
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I don't understand your dimensions of the bar ! and yes... the bar expands in all directions. each height will get higher each width will get wider and each length will get longer
 
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