1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Short question on heat

  1. Mar 30, 2008 #1
    1. The problem statement, all variables and given/known data
    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

    2. Relevant equations

    3. 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..............
  2. jcsd
  3. Mar 30, 2008 #2


    User Avatar

    What do you mean outer circumference? is it a sheet with a hole in it or a ring?
  4. Mar 30, 2008 #3
    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?
  5. Mar 30, 2008 #4
    hi neu
    it is a solid steel
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Short question heat Date
Short Question about Torque on a Ladder Hinge Nov 16, 2014
A Short-Circuit Question Nov 1, 2014
Short thermodynamics questions May 14, 2014
Very short physics question? Jul 4, 2013
Circuit question help?short Apr 26, 2013