perplexus.info :: Calculus : What's wrong with CDs?

What's wrong with CDs? (Posted on 2005-03-30)

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: ( Back to comment list | You must be logged in to post comments.)

THE CORRECT SOLUTION!

| Comment 10 of 11 |

Jesus, How Stupid are you people??? "How far does the needle travel"... IT DOESNT TRAVEL!!! The Record Does, Simple :P

Posted by kris on 2005-04-04 16:45:49

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info