A Disk Whose Rotational Inertia Is 450 Kg∙m² Hangs from a Wire

Multiple Choice

A disk whose rotational inertia is 450 kg∙m² hangs from a wire whose torsion constant is 2300 N∙m/rad.What is the angular frequency of its torsional oscillations?

A) 0.20 rad/s
B) 0.44 rad/s
C) 1.0 rad/s
D) 2.3 rad/s
E) 5.1 rad/s