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A bus is moving in a circular horizontal...

A bus is moving in a circular horizontal track of radius 10 m with a constant speed 10`m//s`. A plumb bob is suspended from the roof of length 1.0m. The angle made by the rod with the track is (take g=10`m//s^2`)

A

zero

B

`30^@`

C

`45^@`

D

`60^@`

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The correct Answer is:
C
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