Phonebook Friction

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Introduction: 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.

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3 Comments

I didn't have any phone books. Either is fine

you need two phone books,but you used dictionaries,i don't understand

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! :)