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In the above example the angular velocit...

In the above example the angular velocity of `S_(2)` as actually observed by an astronaut in `S_(1)` is -

A

`pi//3 "rad"//"hr"`

B

`pi//3 "rad"//"sec"`

C

`pi//6 "rad"//"hr"`

D

`2pi//7"rad"//"hr"`

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