rotational_mechanics.gif (17954 bytes)

CENTRIPETAL FORCE:
FLATTENING EARTH








EQUIPMENT
    redball.gif (326 bytes) Hand-Crank Rotator
    redball.gif (326 bytes) Flattening Earth Model
   


NARRATIVE
            This model consists of two strips mounted on an axis and formed into circular shapes. When rotated slowly, this model appears to be spherical. As the angular velocity increases, the centripetal force along the equator is greater and the poles are drawn closer together.