School of Physics Lecture Demonstration Manual

Ml-2 Free Fall Paradox (The Falling Chimney)

Published: Thursday 09 March 2006 - Updated: Thursday 24 March 2011

Aim

To demonstrate that the vertical component of the acceleration of the end of a hinged stick is greater than g (when theta is about 35° or less).

Apparatus

Free fall paradox apparatus

Diagrams

Click on pictures to enlarge.

Free Fall Paradox Pic 1

Free Fall Paradox Pic 2

Videos

Free Fall Paradox

Description

In the demonstration the elevated end of the stick is released and the ball drops into the cup which can be seen in the photographs above.

Safety notes

Maintenance 

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