A Centrifuge in a Medical Laboratory Rotates at a Rotational

Multiple Choice

A centrifuge in a medical laboratory rotates at a rotational speed of 3600 rev/min. When turned off, it rotates 20.0 times at a constant angular acceleration before coming to rest. The angle through which the centrifuge rotates before coming to rest is

A) 3.18 rad.
B) 20.0 rad.
C) 80.0 rad.
D) 126 rad.
E) 180 rad.