Effect of Heat on Hole Diameter in Steel - Short Question for Homework (2 Marks)

[sovankc]

Homework Statement

this is a 2 marks question
a hole is drilled through a piece of steel what happens to the diameter of the hole as the steel is heated

Homework Equations

The Attempt at a Solution

i guess the diameter of the hole decreases as both the outer as well as inner circumference are free the outer circumference expands outside and inner circumference towards in resulting the hole to be small.....

 

[neu]

What do you mean outer circumference? is it a sheet with a hole in it or a ring?

 

[TVP45]

Take a piece on paper and make a 2" x 2" square. In the center, draw a 0.5" diameter hole. Go to a photocopy machine and enlarge it by 30% or 40% or whatever is handy. Then measure the sides of the new square and the diameter of the hole. What happened?

 

[sovankc]

hi neu
it is a solid steel