Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Metal ball and ring

  1. Sep 10, 2009 #1
    There is a metal ball and a metal ring , through which the metal ball can pass easily. But when the metal ball is heated , it can't pass through the metal ring. What will happen if metal ring is heated?(keeping metal ball normal)
     
  2. jcsd
  3. Sep 10, 2009 #2
    generally ring will expand! so ball can pass through
     
  4. Sep 10, 2009 #3
    but , the ring should also expand inside according to thermal expansion.
     
  5. Sep 10, 2009 #4

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    No. If the thermal expansion is uniform, it causes an uniform scaling up of all distances, including the inner diameter of the ring. In other words: The ring will keep it's proportions, like the inner radius / outer radius ratio. If the outer radius increases, the inner will do so as well.
     
  6. Sep 10, 2009 #5
    what is the clearance between the ball (radius) and ring (radius and thickness!) (both being at room temperature).
    Ball and ring made of which metal?
     
  7. Sep 10, 2009 #6
    it doesnt matter since they are both made of the same material.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Metal ball and ring
  1. Flying Ring (Replies: 5)

  2. Newton's rings (Replies: 3)

Loading...