All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Just Math > Calculus
What's wrong with CDs? (Posted on 2005-03-30) Difficulty: 3 of 5

The diameter of a long playing vinyl record is 12 inches. The unused center has a diameter of 4 inches, and there is a smooth outer edge that is 1 inch wide. If there are 91 grooves to the inch, how far does the needle travel within the groove during playback of the record?

See The Solution Submitted by Erik O.    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionTHE CORRECT SOLUTION!kris2005-04-04 16:45:49
Two similaritiesTomM2005-04-02 00:40:09
re: Simpler SolutionCharlie2005-03-31 19:38:11
SolutionSimpler SolutionCeeAnne2005-03-31 19:26:45
re(2): SolutionDustin2005-03-31 01:04:26
re: Solutionasdfjfaadslkfj2005-03-30 23:27:58
An Aside--triviaCharlie2005-03-30 15:53:06
re: SolutionCharlie2005-03-30 15:25:19
SolutionSolutione.g.2005-03-30 14:43:32
Some ThoughtsNon-Calculus Approximation--spoilerCharlie2005-03-30 14:14:46
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information