Answer :
The angular speed in rpm will be 6. Angular speed is defined as the ratio of the revolution in the given time interval.
What is angular speed ?
The rate of change of angular displacement is defined as angular speed.
ω = n/t
Where,
n is the number of revolution
t is the time
ω is the angular speed
ω = n/t
ω = 18/6
ω = 3 rpm
Hence,the angular speed in rpm will be 6 .
To learn more about the angular speed, refer to the link;
https://brainly.com/question/9684874
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