The circle is right in the middle
2007-05-10 02:16:44 · 5 answers · asked by pingpong 2 in Science & Mathematics ➔ Physics
.Yes,the circle will expand larger in the middle of the metal
square.Because of surface expansion A=A(o)[1+2alpha(t)].
2007-05-10 02:28:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Yes, almost in all the cases. Exceptions may be a few special metals, which may shrink on heating, some shapes of the hole, or if the heating is constrained or normal.
However, in common scenarios, the hole will expand. The proof are the metal rims, which are first heated, then put on tyres and then allowed to cool-off and fit tightly.
More interesting would be to research, why the holes in the human body don't expand even when the whole body expands with age, ex. the navel. ;-)
2007-05-10 02:42:38 · answer #2 · answered by ankush 2 · 0⤊ 0⤋
Yes and no .. because the metal expands as it is heated and the expansion occurs both on the straight edges of the square and the inner round surface of the circle.
So the actual circumference of the original circle will change as the metal expands.
2007-05-10 02:22:22 · answer #3 · answered by Anonymous · 0⤊ 0⤋
No , the circle will not expand.
Only matter expand.
The circle is the perimeter of an empty space.
The circle may be enlarged or reduced in size.
2007-05-10 03:30:13 · answer #4 · answered by xrm 1 · 0⤊ 0⤋
Yes, if heated uniformly, it will expand uniformly in all of its dimensions, including those of the hole.
2007-05-10 03:01:12 · answer #5 · answered by Dr. R 7 · 0⤊ 0⤋