A ring of mass m ca slide over a smooth vertical rod as show in figure. The ring is connected to a sprig of forceconstant k=4mg/R, where 2R is the natural length of the spring. The other end of spring is fixed the ground at a horizontal distance 2R from the base of the rod. If the mass is released at a heigt 1.5 R, then the velocity of the ring as it reaches the ground is

A ring of mass m ca slide over a smooth vertical rod as show in figure

1.	A ring of mass m ca slide over a smooth vertical rod as show in figure. The ring is connected to a sprig of forceconstant k=4mg/R, where 2R is the natural length of the spring. The other end of spring is fixed the ground at a horizontal distance 2R from the base of the rod. If the mass is released at a heigt 1.5 R, then the velocity of the ring as it reaches the ground is
Answer» `SQRT(GR)` `2sqrt(gR)` `sqrt(2gR)` `sqrt(3gR)` ANSWER :B