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A car motor starts from rest. After turning through 3 0 0 revolutions it is going at 1 5 revs / sec . How long

A car motor starts from rest. After turning through

300

revolutions it is going at

15

revs

/

sec

.

How long does it take for the angular speed to rise from

15

revs

/

sec to

30

revs

/

sec if the angular acceleration remains constant?

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