Find minimum height of obstacle so that the sphere can stay in equilibrium.
Find minimum height of obstacle so that the sphere can stay in equilibrium.
- A
$\frac{R}{{1 + \cos \theta }}$
- B
$\frac{R}{{1 + \sin \theta }}$
- C
$R (1- sin\theta )$
- D
$R (1 - cos\theta )$
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