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**[SOLVED] Unstretched Spring and Angular Velocity Problem**

**1. Homework Statement**

A disk of mass 73 kg is held by a spring of unstretched length 88 cm and stiffness constant 430 N/cm, and rests on a frictionless table. It is then orbited in a circle at angular velocity .675 rad/s.

By how much is the spring stretched? Answer in units of cm.

**2. Homework Equations**

After a bit of derivation, I came up with x = r/((k/mw^2)-1).

**3. The Attempt at a Solution**

r = 88

k = 430

m= 73

w = .675

It does not seem to work out. Am I being to complicated about it? Any help/hand-holding is greatly appreciated.