An underformed spring of spring constant k is connected to a bead of mass m as shown in figure. Bead can move along long rigid rod without friction. A particle of mass moving with velocity v in the vertical plane containing spring and rod strikes bead at an angle 45^(@) with horizontal and sticks to bead. Choose correct alternative representing maximum elongation of spring is, all particles are in same horizontal plane.

An underformed spring of spring constant k is connected to a bead of m

1.	An underformed spring of spring constant k is connected to a bead of mass m as shown in figure. Bead can move along long rigid rod without friction. A particle of mass moving with velocity v in the vertical plane containing spring and rod strikes bead at an angle 45^(@) with horizontal and sticks to bead. Choose correct alternative representing maximum elongation of spring is, all particles are in same horizontal plane.
Answer» `(SQRT(m/k))V` `1/2(sqrt(m/k))v` `2(sqrt(m/k))v` `1/4(sqrt(m/k))v` ANSWER :B