Probability question

  • Thread starter chroot
  • Start date
  • #1
chroot
Staff Emeritus
Science Advisor
Gold Member
10,226
36
Hi there, math geeks. Physics geek here. I came across this problem in Griffith's Introduction to Quantum Mechanics, and just can't decide how to attack it.
A needle of length L is dropped randomly onto a sheet of paper ruled with parallel lines a distance L apart. What is the probability that the needle will cross a line?
I've done the previous problems, but this one just threw me for a loop. Can anyone give me some advice? Thanks!

- Warren
 

Answers and Replies

  • #2
841
1
Google for "Buffon's Needle"; you will find plenty.
 
  • #3
chroot
Staff Emeritus
Science Advisor
Gold Member
10,226
36
Thanks for the tip, Ambitwistor!

- Warren
 

Related Threads on Probability question

  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
2
Views
769
  • Last Post
Replies
5
Views
3K
  • Last Post
Replies
13
Views
700
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
8
Views
3K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
3
Views
620
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
1K
Top