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Flattening Earth
# 1D52.10


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320X240 792k
160X120 433k
Description: Two metal strips are bent into a circle and mounted on a pole to form a sphere. The tops of the circles are not mounted, but the pole sticks through a hole in each of them. When the pole is attached to a motor and spun up, the sphere flattens out.

Instructions: Power up the spinner, and vary the voltage to vary the speed.



Hazards: Keep hair, ties (or other such tanglables) our of the reach of the apparatus. Also keep finger away while spinning!

Parts: Cenco Rotator
Flattening Earth apparatus

Purchased/Built: purchased

Setup Time: 10 min

Quant. in Demo Room: 1

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 05-22 A flexible hoop becomes oblate as it is rotated.
Freier and Anderson Mm-4b Flexible hoops flatten when spun on a hand crank rotator.

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