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The rotational inertia of a disc about i...

The rotational inertia of a disc about its axis is 0.70 kg `m^2`. When a 2.0 kg mass is added to its rim, 0.40 m from the axis, the rotational inertia becomes

A

`1.02 kg-m^2`

B

`1.00 kg-m^2`

C

`1.05 kg-m^2`

D

`1.07kg-m^2`

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