Monday, October 8, 2007

Angular Quantites

http://hyperphysics.phy-astr.gsu.edu/hbase/circ.html



In purely rotational motion, all points on the object move in circles around the axis of rotation (“O”). The radius of the circle is r. All points on a straight line drawn through the axis move through the same angle in the same time. The angle θ in radians is defined:

s = r θ


where s is the arc length.

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