Unformatted text preview: 8 t i.e. x 2 + y 2 = φ ( t ) This is a circle at any moment in time whose radius is governed by φ ( t ). But over time the limit of φ ( t ) is zero. Consequently, as time passes the radius must diminish. This means that the trajectory conforms to a spiralling path of everdecreasing radius. ±urthermore, the vector forces indicate that the spiral moves in a clockwise direction regardless of the initial value....
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 Fall '11
 Dr.Gwartney
 Economics, Force, Fundamental physics concepts, Economic Dynamics, clockwise motion

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