A computer disk initially spins at

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

7200\,\text{rpm}

. Over the next

5.0\,\text{s}

it slows with an average angular acceleration of

-12\,\text{rad/s}^{2}

. What is the disk’s angular velocity after

5.0\,\text{s}

? (a)

8.1\times10^{2}\,\text{rad/s}

(b)

6.0\times10^{2}\,\text{rad/s}

(c)

6.9\times10^{2}\,\text{rad/s}

(d)

7.5\times10^{2}\,\text{rad/s}