Physics · PYQ NEET UG 2025

A bob of heavy mass \( m \) is suspended by a light string of length \( l \). The bob is given a horizontal velocity \( v_0 \) as shown in figure. If the string gets slack at some point \( P \) making an angle \( \theta \) from the horizontal, the ratio of the speed \( v \) of the bob at point \( P \) to its initial speed \( v_0 \) is:

1. A
   \( (\sin\theta)^{1/2} \)
2. B
   \( (\frac{1}{2 + 3\sin\theta})^{1/2} \)
3. C
   \( (\frac{\cos\theta}{2 + 3\sin\theta})^{1/2} \)
4. D
   \( (\frac{\sin\theta}{2 + 3\sin\theta})^{1/2} \)