## Essential University Physics: Volume 1 (3rd Edition)

$\omega = 6.34 \ revs/s$
We find the initial rotational inertia: $I = 5.7 + 5(.76^2)=8.588$ We use conservation of angular momentum to find: $8.588(3.1)=4.2\omega \\ \omega = 6.34 \ revs/s$