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Omega(T)
Omega = 2Pi/T
Damping zeta(c)
Zeta = actual damping/critical damping
Critical damping(k,m)
Cc=2sqrt(km)
T
Kinetic energy
1/2 m v2
1/2 I O.2
V
Potential energy
1/2 k u2
mg u
delta Wnc
Non conservative
Work?