Spirals, Helixes, and Cycloids

  • Due Sep 15, 2016 at 8:59am
  • Points 2
  • Questions 2
  • Available until Sep 15, 2016 at 8:59am
  • Time Limit None
  • Allowed Attempts Unlimited

Instructions

Watch the following video tutorial on spirals, helixes, cycloids, and related circular arcs. Then take the quiz.

http://youtu.be/xd8k2WL_V4o

[PDF of Slides]

Summary:

•A spiral is a circular arc with a radius that’s either increasing or decreasing.
•If an object is pulled inward then the spinning motion accelerates by the Coriolis force.
•A helix is circular motion with the center of the circle moving perpendicular to the circle.
•A cycloid is the path of action for a point on the rim of a rolling wheel.
•For motion with a cycle, as in a walk, some paths of action are variations of circular arcs.
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