A wheel having a diameter of 3 m starts ...

A wheel having a diameter of 3 m starts from rest and accelerates uniformly to an angular velocity of 210 r.p.m. in 5 seconds. Angular acceleration of the wheel is

A

4.4 rad `s^-2`

B

3.3 rad `s^-2`

C

2.2 rad `s^-2`

D

1.1 rad `s^-2`

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