# Example 11-1
v1 = 2.4 m/s
r1 = 80 cm
r2 = 48 cm
v2 = v1 * r1 / r2

# Example 11-2
r0 = 60 cm
ma = 6 kg
mb = 9 kg
om1 = 7.2 rad/s
ii = 0.5 * ma * r0^2
del_l = ii * om1
del_t = 2 s
tor = del_l / del_t
om2 = ma * om1 / (ma + mb)

# Example 11-3
rs = 7e5 km
r2 = 10 km
f1 = 1 rev / 100 day
f2 = (rs / r2)^2 * f1; rev/s

# Example 11-4
m1 = 60 kg
r1 = 3 m
v = 4.2 m/s
ii = 1800 kg m^2
om = m1 * r1 * v / ii
1/om; s / rev

# Example 11-6
r = [1.2, 0, 1.2] m
f = [150, 0, 0] N
tau = cross(r,f)

# Homework Problems:

TBD