A Disk with a Rotational Inertia of 5

Multiple Choice

A disk with a rotational inertia of 5.0 kg . m² and a radius of 0.25 m rotates on a frictionless fixed axis perpendicular to the disk and through its center. A force of 8.0 N is applied along the rotation axis. The angular acceleration of the disk is:

A) 0
B) 0.40 rad/s²
C) 0.60 rad/s²
D) 1.0 rad/s²
E) 2.5 rad/s²