Phonebook Friction
Intro: Phonebook Friction
You need 2 phonebooks. I didn't have any so I used dictionary's.
STEP 1: Intertwining
First you need to intertwine the pages by have a couple pages from one book and then another book. Like the photo above.
STEP 2: Pull
Now you pull. No matter how hard you try it won't pull apart. Unless you didn't do it right. The way it works is that you have the friction of multiple pages. It has the friction of one page times the number of pages that contact each other.
3 Comments
andr7 9 years ago
I didn't have any phone books. Either is fine
dcsabi 9 years ago
you need two phone books,but you used dictionaries,i don't understand
Orngrimm 9 years ago
We once made a pair of 2 small books where we took one page at a time... took us around 0.5h to do :)
I think we could pull a car with it... (Havent tryed)
The result was really impressive!
Great way to show students the force of friction! Thanks for the 'ible! :)