Stage: 5 Challenge Level:
An experiment in circular motion using a conker on a string.
The introductory video of 'Shaggy' whirling his conker was created
with a program that includes a simulation engine for Newtonian
mechanics. We used this engine to animate the conker and its string
- so the resulting motion is in a sense 'real'.
Shaggy's hand drives the string. Its motion was defined using
trigonometric functions of time applied to the various joints that
make up the Shaggy model. In the final 5 seconds the hand moves
with exactly half the frequency of the motion which set the conker
whirling initially. Its amplitude is however unchanged.