A car is moving with a constant speed of $20\,m / s$ in a circular horizontal track of radius $40\,m$. A bob is suspended from the roof of the car by a massless string. The angle made by the string with the vertical will be : (Take $g =10$ $\left.m / s ^2\right)$
A car is moving with a constant speed of $20\,m / s$ in a circular horizontal track of radius $40\,m$. A bob is suspended from the roof of the car by a massless string. The angle made by the string with the vertical will be : (Take $g =10$ $\left.m / s ^2\right)$
- [JEE MAIN 2023]
- A
$\frac{\pi}{6}$
- B
$\frac{\pi}{2}$
- C
$\frac{\pi}{4}$
- D
$\frac{\pi}{3}$
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- [IIT 2022]
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