A car is moving along a circular horizon...

A car is moving along a circular horizontal track of radius 10 m with a constant speed of `10 m s^(-1)`. A plumb bob is suspended from the roof of the car by a light rigid rod of length 1.0 m. The angle made by the rod with the track is (`g=10 m s^(-2))`.

A

zero

B

`30^@`

C

`45^@`

D

`60^@`

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