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Don't walk! (Posted on 2021-03-24) Difficulty: 3 of 5
Using only a stopwatch and a sneaker, find an approximate value for sqrt{2}.

Source: M.Levi’s "Why Cats Land on Their Feet" (2012).

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.3333 (3 votes)

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Different solution | Comment 4 of 16 |
From the corner of a room, measure off 10 sneaker-lengths in two perpendicular directions.    

Then measure the number of sneaker-lengths between these endpoints.  If you're lucky you'll get something close to 14 1/7.

Divide this by 10 to approximate sqrt(2).

You can also use the shoelace to help get a better estimate of the partial sneaker-length.  On second thought, using the lace for the whole experiment might be easier than using the sneaker.

  Posted by Jer on 2021-03-24 11:37:49
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