A uniform circular disc of radius 50 cm ...

A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of `2.0 rads^(-2)`. Its netacceleration in `ms^(-2)` at the end of 2.0 s is approximately

`7.0`

`6.0`

`3.0`

`8.0`

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