A compact disc can have an angular speed up to 3146 radians per minute. At this angular speed, how many revolutions per minute would the CD make? Round your answer to the nearest integer.
A)122
B)143
C)919
D)501
E)72

Question

Quizplus · Accepted Answer

To convert the angular speed from radians per minute to revolutions per minute, divide the given angular speed by $2\pi$ (since there are $2\pi$ radians in one revolution). So, $3146 \, \text{radians per minute} \div 2\pi \approx 501$ revolutions per minute.

A Compact Disc Can Have an Angular Speed Up to 3146