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03 December 2010

Not what I was looking for, but I like the way you think.

ME:  ...so, in all of your pulley experiments, we find that you needed a larger amount of force to lift the weights than you expected from the calculations.  Why do you think that is?

TEN-YEAR-OLD:  I don't know.

ME:  Well, what's the difference between an ideal imaginary pulley and a real experimental pulley?

TEN-YEAR-OLD:  ...

ME:  Something the real pulley has that the imaginary pulley doesn't.  We talked about this, remember?

TEN-YEAR-OLD:  ...

ME:  One word.  Starts with "F."

TEN-YEAR-OLD (desperately):  Flammable!

ME: ...

TEN-YEAR-OLD:  Real pulleys are flammable, you know.

 

03 December 2010 in Education, at home and elsewhere, Science (General) |

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Rebekka

Love this.

Posted by: Rebekka | 04 December 2010 at 04:52 AM

Darwin

Hmmmm. Well, friction could lead to something bursting into flames, I guess... Surely at least partial credit, right?

Posted by: Darwin | 04 December 2010 at 09:13 AM

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All writing and images © E. G. Arlinghaus except where noted. The image "Prickly Pear Cactus Fruit" was published by Ken Bosma on Flickr under a Creative Commons license and accessed on May 7, 2016. It has been resized.