TITLE: Does the centre of mass of an object undergoing thermal expansion move?
QUESTION [1 upvotes]: I recently faced the question in an examination. The question is pretty straightforward.
Does the centre of mass of an object undergoing thermal expansion move?

P.S.

The solution for this question assumed that centre of mass would not move.

REPLY [0 votes]: It depends on the composition of the object. If it is made up non-uniformly,of materials with different coefficients of expansion, the center of gravity would move, even if the heat were uniformly distributed.
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