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A 60 mm radius wheel is connected to a f...

A `60 mm` radius wheel is connected to a fixed support `D` by two links `AB` and `BD`. At the instant shown, the velocity of the centre `A` of the wheel is `30m//s` to the left. Rod `AB` and `BD` have equal length `l=5m`.
The angular velocity of rod `BD` is

A

`2sqrt(2) rad//sec`

B

`3sqrt(2) rad//sec`

C

`8sqrt(2) rad//sec`

D

None of these

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