A car is moving in a circular horizontal track of radius 10.0 m with a constant speed of `10.0 ms^(-1)`. A plumb bob is suspended from the roof of the car by a light rigid rod of length 10.0 m. The angle made by the rod with the track is (Take,`g = 9.8 ms^(-2)`)
Options:
(a) zero
(b) 30°
(c) 45°
(d) `60^o`