A ceiling fan rotates at and slows to rest with a constant angular deceleration of in…

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

Problem

A ceiling fan rotates at

120\,\text{rev/min}

and slows to rest with a constant angular deceleration of

0.80\,\text{rad/s}^2

in the opposite direction of its rotation. How much time elapses before the fan comes to rest? (a)

12.6\,\text{s}

(b)

31.4\,\text{s}

(c)

15.7\,\text{s}

(d)

2.5\,\text{s}