Change in angular velocity is 3000 rpm - 1200 rpm = 1800 rpm.
This happens over a period of 10 seconds, or 1/6 of a minute.
Angular acceleration
= change in angular velocity/change in time
= 1800/(1/6)
= 10800 rpm^2
Number of rotations made during this time
= 1800 rotations per minute x 1/6 minute
= 300 rotations
The angular velocity of an engine increase from 1200 RPM to 3000 RPM in 10 second computer angular acceleration and the number of revolution made during this time.
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