The World on A String
Tie a string around the Earth’s equator so that it is tight. Now, add one foot to the string. Pull it at one point until it is tight but comes up to a point. How far from the Earth’s surface is this? (How long a pole would you need to support it?)
To how many digits can you give your answer? Can you defend your answer?
A similar problem (but much easier) is here: http://www.wcsscience.com/string/aroundearth.html or http://www.newton.dep.anl.gov/askasci/math99/math99160.htm
|E-Mail: Dr. Russell Herman||Last Updated: January 21, 2010|