A ring of mass $m$ can freely slide along the massless curved rod as shown. At the lower most point, the curved path becomes vertical. If whole system is released from rest, velocity of ring $(v) $ at lowermost point just before touching the block $M$ (all surfaces are smooth) is
A ring of mass $m$ can freely slide along the massless curved rod as shown. At the lower most point, the curved path becomes vertical. If whole system is released from rest, velocity of ring $(v) $ at lowermost point just before touching the block $M$ (all surfaces are smooth) is
- A
$v = \sqrt {2gH} $
- B
$v < \sqrt {2gH} $
- C
$v > \sqrt {2gH} $
- D
Data insufficient
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