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A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is
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- 0°
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π 3 -
π 6 -
π 4
Correct Option: D
Given; speed = 10 m/s; radius r = 10 m
Angle made by the wire with the vertical
| tanθ = | = | = 1 | ||
| rg | 10 × 10 |
| ⇒ θ = 45° = | ||
| 4 |
