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In the following figure, a sphere of rad...

In the following figure, a sphere of radius 3m rolls on a plank. The accelerations of the sphere and the plank are indicated. The value of `alpha` is

A

`3rad//s^(2)`

B

`6rad//s^(2)`

C

`3rad//s^(2)` (opposite to the direction shown in figure)

D

`1rad//s^(2)`

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A
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