1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    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!

A surprising little calculation

  1. Jun 12, 2003 #1

    Ivan Seeking

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    I ran across this years ago and thought to pass it along. I kept the non-math types at the local museum of science and industry quite busy with this for awhile on day. Before the day was over, I had them eyeing the round dome of the science building.

    Ignoring all practical considerations, if I wrap a string around the earth at the equator and pull if tight, and then I add 1 foot to the length of the string, what is the gap formed between the string and the earth if the gap is made uniform everywhere?

    How about if we wrap a string around a 12" diameter globe and do the same thing?

    What is the radius of a circle having a circumference of 1 foot?

    A little surprising isn't it.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted



Similar Discussions: A surprising little calculation
  1. Spelling surprises (Replies: 28)

  2. Surprise party! (Replies: 24)

  3. Surprising facts (Replies: 47)

Loading...