Cylindrical stack of discs : Différence entre versions
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Version actuelle datée du 28 août 2015 à 15:05
Back to 1F - Newton's First Law
PIRA index: 1F20.34
Description
A stack of cylindrical discs is placed on a table. Discs from the bottom are removed by hitting them with a ruler. The remaining discs drop down to the table each time without falling over.
Equipment
- stack of discs
- solid ruler
- flat surface
Instructions
Set the stack of discs on a flat surface. Swiftly remove the bottom disc by hitting it with the side of the ruler. The stack should drop down without toppling over.
Keywords
disc, mass, ruler, tablecloth
Images & Movies
Figure1
