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A fly wheel starts rotating from rest an...

A fly wheel starts rotating from rest and acquires rotational speed of 360 revolution `s^(-1)` in 3 minutes. The average angular acceleration is…………..

A

`3("revolution")/(("second")^(2))`

B

`4("revolution")/(("second")^(2))`

C

`1("revolution")/(("second")^(2))`

D

`2("revolution")/(("second")^(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
`alpha=(omega-omega_(0))/(t)=(360-0)/(3xx60)=2("revolution")/(("second")^(2))`
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