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A constant torque of 31.4 N-m id exterte...

A constant torque of `31.4 N-m` id exterted on a pivoted wheel. If the angular acceleration of the wheel is `4 pi rad//s^2`, then the moment of inertia will be.

A

`2.5 "kg" - m^(2)`

B

`2.5 kg-m^(2)`

C

`4.5 kg-m^(2)`

D

`5.5 kg- m^(2)`

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