# Example 21.3
m0 = 2 kg
k = 8 N/m
c = 1 N s / m
om = sqrt(k/m0)
d = c / (2 * m0)
omd = sqrt(om^2 - d^2)

# Example 21.4
m0 = 20 kg
r = 0.3 m
ii = 0.5 * m0 * r^2
k = 60 N/m
c = 24 N s / m
d = 6 * c / (2 * m0)
om = sqrt(8 * k / (3 * m0))
h = sqrt(d^2 - om^2)


# Example 21.5
m0 = 2 kg
k = 8 N/m
c = 1 N s / m
om = sqrt(k/m0)
d = c / (2 * m0)
omd = sqrt(om^2 - d^2)
a0 = 20 N / m0
om0 = 4 rad/s
ep = a0 / sqrt((om^2 + om0^2)^2 + 4 * d^2 * om0^2)



# Homework Problems:

TBD