Question

A hole is drilled in a metal plate. When the temperature of the plate is raised, does the hole get larger or smaller? Explain.

Answer 1

I can give you an example for either case..but first you should make an attempt :)

Answer 2

how?

Answer 3

Tell me what according to you is the answer..and why ??

Answer 4

i think the hole will get larger, but idk the explanation

Answer 5

In general, the hole will get larger as thermal expansion is symmetric in all directions.

But if we confine the metal plate from all sides; the hole will actually shrink because the metal is expanding.

Answer 6

so what is it then, will it expand or not?

Answer 7

since the metal will expand whole will reduced

Answer 8

As the question has not specified any constraints; the answer should be - "Hole will get larger"

Answer 9

But I think I should tag a teacher here;
@Vincent-Lyon.Fr

Answer 10

thanks :)

Answer 11

consider the pate as made up of concentric rings, without any constraints, heating will expand all the rings, ie the hole will expand

Answer 12

Yes, unconstrained, a rising temperature expands all dimensions.

Answer 13

When heating without constraints, all points will move away from one another.
Actually, it is like the universe expanding ;-)