The second's hand of watch has length 6 ...

The second's hand of watch has length 6 cm. Speed of end point and magnitude of difference of velocitie at two perpendicular positions will be

`2pi & 0"mm//s"`

`2sqrt2 pi & 4.44mm//s`

`2sqrt2 pi & 2pi mm//s`

` 2pi & 2sqrt2 mm//s`

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