What is the angular speed,in rad/s,of a flywheel turning at 813.0 rpm?
A)85.14 rad/s
B)13.53 rad/s
C)63.84 rad/s
D)95.33 rad/s

Question

Quizplus · Accepted Answer

Angular speed is measured in radians per second (rad/s). To convert from revolutions per minute (rpm) to radians per second, we use the conversion factor:
1 rpm = (2π/60) rad/s
where 2π is the number of radians in one revolution, divided by 60 seconds per minute. 
So, angular speed (ω) in radians per second is given by:
ω = (2π/60) × rpm
ω = (2π/60) × 813.0 rpm 
ω = 85.14 rad/s (rounded to two decimal places)

What Is the Angular Speed,in Rad/s,of a Flywheel Turning at 813.0